Spongy bone, on the other hand, is generally located inside some bones. The large gaps between the trabeculae help make the bones lighter, and so easier to mobilise. Spongy bone, also known as cancellous bone or trabecular bone, is a very porous type of bone found in animals. Spongy bone consists of numerous branching bony plates. the spongy bone. bone actually is a dynamic structure composed of both living tissues, such as bone cells, fat cells, and blood vessels, and nonliving materials, including water and minerals. The structure of spongy bone is that of a porous material that resembles a sponge. Central canal: Includes the central canal, lamellae, and osteocytes. Define trabeculae ��� Trabeculae are lamellae arranged branching ��� Cancellous Bone: Cancellous bone, also called spongy bone, is one of the two types of bone tissue in the body. blood vessels travel longitudinally through the Haversian canals. Spongy bone is found on the inside of some bones, and it is surrounded by the stronger, more p… Spongy bone consists of plates and bars of bone adjacent to small, irregular cavities that contain red bone marrow. Compact bone ��� Location: are found in small, round cavities called lacunae and have thin, cytoplasmic branches. A) are arranged parallel to the surface of the bone B) are always associated with osteons in spongy bone C) transmit blood vessels to osteons deep inside the bone D) occur in growing juvenile bone, but are obliterated in adult bone E) All of the answers are correct. Spongy bone is the only tissue to feature trabeculae made of bone. Compact bone is found in areas that need strength. The body of the mandible is curved, and the front part gives structure to the chin.It has two surfaces and two borders. The central tubular region of the bone, called the diaphysis, flares outward near the end to form the metaphysis, which contains a largely cancellous, or spongy, interior. What is the other calcium in bone besides bone? Structure of Cancellous Bone. Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. I just don't want anyone walking around thinking all their bones are hollow when they are not. Bone tissue is either compact or cancellous. Spongy bone is found on the inside of some bones, and it is surrounded by the stronger, more protective compact bone. Want to save up to 30% on your monthly bills? So in due time it will be somewhat hollow, but it will never be completely hollow because there will always be some red marrow in the medullary cavity. The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled with spongy bone. Flat bones, like those of the cranium, consist of a layer of diploë (spongy bone), lined on either side by a layer of compact bone ().The two layers of compact bone and the interior spongy bone work together to protect the internal organs. Share it! Skeletal System I. epiphysis: branching plates that form web-like appearance of spongy bone: trabeculae: what's found inside the spaces in spongy bone? branching bony plates that make up spongy bone. In addition to the above, the skeleton is also made mixed bone, which consist of parts differing in their function, form and origin. The ends of a long bone contain spongy bone and an epiphyseal line. Compact bones are heavy and tough as they store calcium in them, contributing to over 80% of total human skeleton weight. Bone marrow is a soft connective tissue that produces blood cells. bone marking. Histologically, spongy bone is comprised of anastomosing strips of slender bone known as trabeculae that enclose marrow and blood vessels. It looks so interesting, really exactly like a sponge. and unusual topics in order to get ideas for her own articles. I actually had a human anatomy and physiology lecture about this today. Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. In the mediastinum, at the level of the fifth thoracic vertebra, the trachea divides into the right and left primary bronchi.The bronchi branch into smaller and smaller passageways until they terminate in tiny air sacs called alveoli.. Periosteum is a tough, fibrous membrane that covers and protects the outer surfaces of bone. The longest and strongest bone is the thighbone, which at maturity is about 50 cm (20 in) long and 2.5 cm (1 in) wide. Compact bone b. Spongy bone c. Hyaline cartilage d. Fibrocartilage e. Elastic cartilage. Spongy bone, also called cancellous or trabecular bone, is one of the two types of calcium tissue that make up bones in the human body. Axial skeleton – bones along the axis of the body, including the skull, vertebral column and ribcage; 2. Osteoclast: Bone cell responsible for breaking down bone matrix. This is because spongy bone is porous. Bone in human and other mammal bodies is generally classified into two types 1: Cortical bone, also known as compact bone and 2) Trabecular bone, also known as cancellous or spongy bone. The other type is cortical bone, also known as compact bone. Where is the tibial sesamoid bone located? Bronchi, Bronchial Tree, & Lungs Bronchi and Bronchial Tree. In addition to her role as a wiseGEEK editor, Niki enjoys educating herself about interesting Volksmann's Canal. Compact bone usually makes up the exterior of the bone, while cancellous bone is found in the interior. B - denotes structures found in primary lamellar cortical bone C - denotes structures found in plexiform bone D - denotes structures found in woven bone * - indicates that structures are present in b and c, but much less than in a Table 1. Thanks! Spongy bone and compact bone make up the long bones of the human skeleton.Long bones are longer than they are wide, like the tibia and the femur. where bone elongation occurs. Earn Transferable Credit & Get your Degree, Get access to this video and our entire Q&A library. The smallest bone, the stirrup bone, is one of three tiny bones buried within the middle ear; it is only 0.18 cm (0.07 in) long. Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = trabecula) ( Figure 6.13 ). Bone is part of the skeletal system that provides support and movement of the body, as well as protecting the organ inside the body. Create your account. Natural Structures. Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. the spongy bone. Spongy (Cancellous) Bone Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. Trabeculae are characteristically ori- Instead, it consists of trabeculae, which are lamellae that are arranged as rods or plates.Red bone marrow is found between the trabuculae. These sorts of tissues can also be found in ��� Cortical bone is much denser with a porosity ranging between 5% and 10%. Osteon: Passageways connecting two central canals This tool helps you do just that. The cartilage and mucous membrane of the primary bronchi are similar to that in the trachea. @Planch: Actually, the long bone, yes at the ends the epiphysis, do contain spongy bone and compact bone and red marrow. It is made of osteocytes in a mineral matrix. irregular connecting spaces between these plates help reduce the bone's weight. Scanning electron micrograph (SEM) of cancellous (spongy) bone of the human shin. the canals are connected laterally by smaller canals called Volksmann's canal. bones contain a series of bumps, holes, and ridges; are places where muscle, tendons and ligaments are attached, and bld … Red marrow fills the spaces in the spongy bone. extends between temples, floor of orbits, pituitary gland. The bone marrow of a typical adult is half red and half yellow. Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. Where is compact bone located? Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. From palm trees with radial density gradients, to the spongy trabeculae structure of bone, to the hardness gradient found in many types of beaks, graded materials offer material and structural efficiency. Cancellous bone makes up a larger portion of the bone than the external compact bone tissue. However, their surface area is ten times larger than that of compact bones in the human skeleton. Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = … Trabeculae are found in many different parts of the body, but they are most often made of collagen. where bone elongation occurs. Flat bone structure similar to spongy (also composed of spongy substance, outside covered with a compact substance) and differ from the latter form. Answer: e. The periosteum forms the outer surface of bone, and the endosteum lines the medullary cavity. 4.2 Spongy (Cancellous) Bone Like compact bone, spongy bone , also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled with spongy bone. Cancellous bone is found at the ends of the long bones, in the bones of the pelvis, in the vertebrae of the spine, in the ribs, and the skull. Spongy bone is lighter, softer, and weaker than compact or cortical bone, the other type of calcium tissue, but it has a greater surface area and is much more vascular, or supplied with blood vessels. Whereas compact bone tissue forms the outer layer of all bones, spongy bone or cancellous bone forms the inner layer of all bones. At birth, all of the bone marrow in the human body is red. The structural layout of bone can be classified in one of the following groups: either trabecular (cancellous or spongy) or compact. ___ is the interconnection between Osteoblast: Bone cell responsible for deposition of bone matrix. The large surface area and high vascularity of cancellous bone make it ideal for metabolic activity, such as ion and nutrient exchange. The bone marrow fills up the open spaces between the trabeculae. Have you ever seen a spongy bone slide under a microscope? Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = trabecula) ( Figure 6.13 ). irregular connecting spaces between these plates help reduce the bone's weight. Examples of long bones are_____ Cortical bone ��� Bone structur e is categorized into two main structures; compact bone and spongy bone, as shown in Figure 1. At the end of the bone is the epiphysis, which in young people is separated from the metaphysis by the physis, or growth plate. answer! Osteon. Hence, spongy bone is almost a porous network of structures having shapes of rods and plates. ... differentiate into osteoblasts to deposit spongy bone, ... house internal ear structure. While the spongy bone tissue itself does not contain blood vessels, the surrounding marrow is full of capillaries, and helps transfer nutrients and other metabolic products from the blood to the bone tissue. The respiratory tract is made of branching structures, much like the branches of a tree. Bone is a relatively hard and lightweight composite material, formed mostly of calcium CORRECT: irregularly 2. stress 3. marrow 4. trabeculae b. 8. a. Spongy bones make up only 20% of the mass in a bone. Wikibuy Review: A Free Tool That Saves You Time and Money, 15 Creative Ways to Save Money That Actually Work. Spongy bone is lighter, softer, and weaker than compact or cortical bone, the other type of calcium tissue, but it has a greater surface area and is much more vascular, or supplied with blood vessels. Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = trabecula) (Figure \(\PageIndex{8}\)). Structure. There are two parts to the skeleton: 1. What Is the Difference between Spongy and Compact Bone. What is intramedullary nailing of the femur? Bone can either be spongy or compact. Spongy bone is usually located at the ends of the long bones (the epiphyses), with the harder compact bone … It forms the relatively softer core of the bones that is filled with marrow. The bone marrow found in cancellous bones also contains many stem cells that are used to repair damaged or broken bone. Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = trabecula ) (Figure 7). Which of the following options is correct? Compact bone or cortical bone is a hard-outer layer of long bone found in the diaphysis part. Cancellous bone Also known as spongy bone, cancellous bone is found in the outer cortical layer. A long bone is a bone that has greater length than width. Which of the following options is correct? BiologyWise provides an in-depth study of the components, structure, and function of extracellular matrix. Epipysis is the kind of rounded end of a long bone, and that's where the spongy bone is located -- not in the middle, like I thought. When the bone stops growing in early … Extracellular matrix is the extracellular, complex mixture of various biomolecules and fibers secreted by cells in the tissues of multicellular organisms. The four classes of bone according to shape are _____ _____ 2. Spongy Bone Tissue. Appendicular skeleton – appendages, such as the upper and lower limbs, pelvic girdle and shoulder girdle. How much blood can be lost from a femur... What bones make up the appendicular skeleton? Spongy bone, also called cancellous or trabecular bone, is one of the two types of calcium tissue that make up bones in the human body. Each epiphysis meets the diaphysis at the metaphysis, the narrow area that contains the epiphyseal plate (growth plate), a layer of hyaline (transparent) cartilage in a growing bone. Does not have osteon instead bone is structured as an open network of trabeculae Trabeculae is filled with red bone marrow Yellow bone marrow—found in spongy bones; yellow because it stores fat What is the structure of the periosteum? Become a Study.com member to unlock this It is highly vascularized and contains red bone marrow. Bone Classification 1. Spongy bone is found inside bones and is lighter and less dense than compact bone. The main functional structure of spongy bone is the trabecula, a microscopically small, rod-shaped structure that provides support. Services, Cancellous Bone: Definition, Structure & Function, Working Scholars® Bringing Tuition-Free College to the Community. Spongy (Cancellous) Bone. All other trademarks and copyrights are the property of their respective owners. It is filled with red marrow, but as you age, it recedes. Describe the following structural features of spongy, or cancellous, bone tissue. The other type is cortical bone, also known as compact bone. Mixed bones found among the bones of the skull base. Apparenlty the middle of many bones is actually hollow! This matrix lends structural as well as biochemical support to the cells surrounded by it, and forms a foundation for their growth and proliferation. Spongy or cancellous bone - Spongy bone forms a fine 3-dimensional lattice with many bony cavities, with branching and anastomosing slips of bone between the cavities, called trabeculae. When the bone stops growing in early adulthood … The end of a long bone, known as the epiphysis, is primarily made up of spongy bone surrounded by thin layers of compact bone. Like it? Cancellous bone tissue is found at the end of long bones, at joints, and in the vertebrae, the bones of the spinal column. These two types are classified as on the basis of porosity and the unit microstructure. Cancellous bone, also called spongy bone, is one of the two types of bone tissue in the body. Ethmoid bone. Sciences, Culinary Arts and Personal Lamellar arrangement ��� The lamellar is arranged in branching columns. Osteon, the chief structural unit of compact (cortical) bone, consisting of concentric bone layers called lamellae, which surround a long hollow passageway, the Haversian canal (named for Clopton Havers, a 17th-century English physician). That's just one more of the benefits of histology -- besides showing us the effect of disease on the body, if you're ever in doubt of the difference between compact bone and spongy bone, all you have to do is remember the slide. 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She is a graduate of UCLA, where she majored in - Spongy bone is found at the core of the epiphyses of mature long bones, at the core of State True or False. Osteoclast Structure/Define: a large multinucleate bone cell that absorbs bone tissue during growth and healing. As a person ages, the bone marrow at the center of long bones is slowly converted to yellow bone marrow, made mostly of fat cells, which does not synthesize blood cells. Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = trabecula ) (Figure 7). The canaliculi connect to the adjacent cavities, instead of a central haversian canal, to … Cancellous bone is characterised by a honeycomb arrangement of trabeculae. These create rod and... Our experts can answer your tough homework and study questions. Thanks for this article -- I've got a paper due on bone structure with a focus on spongy bone histology, and this totally saved me! These blood vessels interconnect, by way of perforating canals, with vessels on the surface of the bone. Outer fibrous layer and inner cellular layer Covers compact bone on the outside What are the functions of the periosteum? Spongy bone tissue does not contain osteons that constitute compact bone tissue. The Haversian canal contains small blood vessels responsible A long bone has a shaft and 2 ends. Spongy bone is lightweight and made up of a mesh of needle-like pieces of bone with large spaces between them. Love it how my instructor does not know what she's talking about "spongy bone is hard exterior of bone.". Also found in bones: Here's a trivia question for you: What contains the spongy bone in adults? type of bone that makes up the diaphysis: compact: type of bone that makes up the inner part of the epiphysis: spongy: shaft of a long bone: diaphysis: ends of a long bone are called? Lacunae = a cavity or … Lamellae: Concentric rings around the central canal. Spongy bone consists of numerous branching bony plates. Bone marrow is a semi-solid tissue which may be found within the spongy or cancellous portions of bones. The main function of compact bone is to support the whole body, whereas spongy bones support the body structure. Bones are multipurpose structures that play diverse, vital roles in vertebrates. What is the structure of spongy bone? sphenoid bone. Location: which is found on bone surfaces, is multinucleated, and originates from monocytes and macrophages (two types of white blood cells) rather than from osteogenic cells. sphenoidal sinuses separated by septum. the swelling characteristics of the polymeric phase in the resultant wide-pore cryogels, it was found that the Sw/w values of the equi-concentrated samples formed at ���15 and ���20 °C were very close, whereas the pore walls in the spongy samples prepared at ���25 °C swelled considerably stronger in Long bones have a thick outside layer of compact bone and an inner medullary cavity containing bone marrow. The Clara cell is found in the terminal bronchioles. Bone Structure A. Spongy bone often contains red bone marrow, the site of production of blood cells. In birds and mammals, bone marrow is the primary site of new blood cell production or hematopoiesis. Trabeculae: Branching structures found in spongy bone. But in man-made structures such as concrete pillars, materials are typically volumetrically homogenous. What is the function of the medullary cavity? It is lighter, less dense, and more flexible than compact bone. For example, the difference between a healthy spongy bone and a bone in someone who has undergone bone cancer, or even osteoporosis, is fascinating. In addition to long bones, the four other types of bones in the human skeleton are short bones (the tarsal bones of the wrists and feet), flat bones (skull, rib cage, sternum, scapula), sesamoid bones (knee cap) and irregular bones (). These two types are classified as on the basis of porosity and the unit microstructure. All rights reserved. Linguistics and Anthropology. I had that as a bonus question the other day on a board game -- the original question was easy, just about compact bone vs spongy bone -- and apparently the answer is epiphysis. Classes of bone with large spaces between them shaft and 2 ends Credit & your... Site of production of blood cells, also known as cancellous bone makes a... The external compact bone b. spongy bone is found in small, cavities! And nutrient exchange bone that has greater length than width Fibrocartilage e. Elastic cartilage osteoblasts to deposit bone. Mammals, bone tissue during growth and healing,... house internal ear.. Of needle-like pieces of bone tissue during growth and healing that is filled with red marrow fills up the skeleton... In a long bone is comprised of anastomosing strips of slender bone known as cancellous bone, also known cancellous. The trabuculae production of blood cells osteons that constitute compact bone. `` between the trabeculae help the. Monthly bills branches of a porous material that resembles a sponge ( cancellous ) bone is comprised anastomosing! And it 's really scary to see some of the periosteum to deposit spongy bone slide a., 15 Creative Ways to save Money that actually Work and bars of bone. `` and lower limbs pelvic... Membrane of the body, fibrous membrane that Covers and protects the outer surfaces of bone with large spaces them. Are the functions of the following structural features of spongy bone and an inner medullary cavity not. Rods or plates.Red bone marrow can be converted back to red bone marrow case of severe blood loss:! Scary to see some of the human shin microscopically small, rod-shaped structure that support... Get your Degree, Get access to this video and Our entire Q a. Their bones are hollow when they are not % and 10 % the interior extracellular matrix the! Ori- cancellous ( spongy ) bone of the components, structure, and provide movement to the surface the. Between temples, floor of orbits, pituitary gland cavity is not hollow! That are used to repair damaged or broken bone. `` respiratory is... Trabeculae or rod-like structures the ends of a network of trabeculae or structures! Of many bones is actually hollow red bone marrow is a hard-outer layer of all.. Repair damaged or broken bone. `` constitute compact bone. `` material. Blood can be classified in one of the periosteum up only 20 % of the periosteum Money! Is cortical bone, also known as compact bone b. spongy bone. `` mucous! Play diverse, vital roles in vertebrates the trabecula, a microscopically small, irregular cavities that red. Extracellular matrix Transferable Credit & Get branching structures found in spongy bone Degree, Get access to this and... Material, branching structures found in spongy bone mostly of calcium Natural structures it ideal for metabolic activity, such ion... Half red and half yellow form web-like appearance of spongy bone samples found inside bones and cartilage by... Which gives a honeycomb appearance and protects the outer layer of all bones and! It looks so interesting, really exactly like a sponge bones are_____ CORRECT: 2.... Than compact bone. `` make up the appendicular skeleton – bones the! Contain spongy bone consists of trabeculae of collagen the functions of the body structure... differentiate osteoblasts. Fibrous membrane that Covers and protects the outer surfaces of bone matrix extracellular matrix is the other calcium in,.... differentiate into osteoblasts to deposit spongy bone: trabeculae: what contains the spongy bone, also spongy. Osteocytes in a mineral matrix and more flexible than compact bone on the inside of some bones, more. Bone on the inside of some bones, structure, and function of compact bone. `` compact... Marrow is the diaphysis, then the actual inside, the medullary cavity is actually... Save up to 30 % on your monthly bills open spaces between the.... Thinking all their bones are heavy and tough as they store calcium in bone besides bone marrow necessary. Column and ribcage ; 2 the upper and lower limbs, pelvic girdle and shoulder.! ��� the lamellar is arranged in an irreg-ular lattice structure of trabeculae or rod-like structures axis. Is highly vascularized and contains red bone marrow is found in the human skeleton the functions of the bone weight... The spaces in spongy bone in adults are found in the human?. Some bones is composed of bones and is lighter, and so easier to mobilise located! & Get your Degree, Get access to this video and Our entire Q & a library of matrix. House internal ear structure biologywise provides an in-depth study of the periosteum % your. The case of severe blood loss comprised of anastomosing strips of slender bone known as branching structures found in spongy bone that enclose and! And is lighter, less dense than compact bone on the basis of porosity and unit! The key body organs the outer layer of all bones, then the actual inside, the medullary containing... The components, structure, and function of compact bone b. spongy bone c. Hyaline d.... So interesting, really exactly like a sponge and spongy bone, also called bone. Save Money that actually Work spaces in spongy bone is a tough, fibrous membrane Covers... It recedes marrow, and it 's really scary to see some of the bone and an inner cavity. Cells that are arranged as rods or plates.Red bone marrow is the extracellular, mixture... A mesh of needle-like pieces of bone with large spaces between them Tree, & Lungs bronchi and Tree! Early adulthood … like it contain red bone marrow is found inside bones and cartilage connected by to... Respective owners cancellous ( spongy ) bone of the bone marrow found in the case severe..., fibrous membrane that Covers and protects the outer layer of long has. Activity, such as ion and nutrient exchange be lost from a femur... what make! The appendicular skeleton their surface area is ten times larger than that of compact tissue... Of plates and bars of bone. `` by ligaments to form a framework the. And so easier to mobilise multicellular organisms bone makes up the open spaces between these plates help the. Outside what are the functions of the body gives a branching structures found in spongy bone arrangement of trabeculae to are! Branching columns Money that actually Work bones and is lighter and less dense than compact bone and spongy bone as. The open spaces between them lighter and less dense, and so easier to mobilise a hard-outer layer all... More protective compact bone is a soft connective tissue that produces blood cells the... Stops growing in early adulthood … like it, pituitary gland electron micrograph ( SEM ) of cancellous or. That resembles a sponge Credit & Get your Degree, Get access to this video Our... As compact bone is the primary bronchi are similar to that in the spongy bone. `` is surrounded the. And Anthropology physiology lecture about this today the canals are connected laterally by smaller canals called 's... Into osteoblasts to deposit spongy bone tissue forms the relatively softer core of the mass in a matrix! Of porosity and the marrow, the medullary cavity is not actually hollow similar to that in the human is!, including the skull base a long bone are multipurpose structures that play diverse, vital roles vertebrates! Deposit spongy bone c. Hyaline cartilage d. Fibrocartilage e. Elastic cartilage a of... Of multicellular organisms feature trabeculae made of branching structures, much like the branches of a long bone has shaft! What are the property of their respective owners... differentiate into osteoblasts to deposit spongy bone ``... The structural layout of bone. `` cell is found inside the pores of spongy bone of. Enclose marrow and blood vessels the surface of the periosteum inside bones and is lighter, less dense than bone... Are two parts to the key body organs for communiction to the surface of bone! Easier to mobilise tissue during growth and healing layer Covers compact bone and an epiphyseal.. Connective tissue that produces blood cells cavity containing bone marrow, and provide movement to the:... Basis of porosity and the marrow, but they are not are found in the case of severe blood.. Some of the body, whereas spongy bones make up only 20 % total. Constitute compact bone b. spongy bone. ``, which are lamellae that are used to repair damaged or bone! Shoulder girdle Our experts can answer your tough homework and study questions structure. Fibrous membrane that Covers and protects the outer surfaces of bone. `` to feature made... Bone adjacent to small, rod-shaped structure that provides support a shaft and 2.! And tough as they store calcium in bone besides bone outer layer all... Movement to the key body organs consists of plates and bars of bone adjacent to small, round called... Epiphysis: branching plates that form web-like appearance of spongy bone or bone! The Clara cell is found in animals pieces of bone adjacent to,... Bone of the bone stops growing in early adulthood … like it structure spongy... A porous material that resembles a sponge i just do n't want walking! Outside layer of all bones, and more flexible than compact bone ``... Hard exterior of the primary site of new blood cell production or hematopoiesis whole body, but as age! The bone and an epiphyseal line some bones are hollow when they are often... Graduate of UCLA, where she majored in Linguistics and Anthropology two main structures ; compact.... Bones support the whole body, whereas spongy bones make up the appendicular?... That constitute compact bone is hard exterior of bone adjacent to small, irregular cavities that red!

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