what are the structural differences in compact bone and spongy bone?
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Whereas compact bone tissue forms the outer layer of all bones, spongy bone or cancellous bone forms the inner layer of all bones. Spongy bone tissue does not contain osteons that constitute compact bone tissue. Instead, it consists of trabeculae, which are lamellae that are arranged as rods or plates.
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Osteons are interesting little things. Osteons are structural units of compact bone. Each osteon consists of a central canal, which contains nerve filaments and one or two blood vessels, surrounded by lamellae. Lacunae, small chambers containing osteocytes, are arranged concentrically around the central canal.
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['Flat Bones Protect Internal Organs. ... ', 'Long Bones Support Weight and Facilitate Movement. ... ', 'Short Bones Are Cube-shaped. ... ', 'Irregular Bones Have Complex Shapes. ... ', 'Sesamoid Bones Reinforce Tendons.']
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Long bones, such as the femur, are longer than they are wide. Short bones, such as the carpals, are approximately equal in length, width, and thickness. Flat bones are thin, but are often curved, such as the ribs.
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Short bones are shaped roughly as a cube and contain mostly spongy bone. The outside surface is comprised of a thin layer of compact bone. Short bones are located in the hands and feet. The patella (kneecap) is also considered a short bone.
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Short bones: Short bones also have a tubular shaft and articular surfaces at each end but are much smaller. The short bones include all of the metacarpals and phalanges in the hands, and the metatarsals and phalanges in the feet.
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Osteocytes are mature bone cells, whereas osteoblasts are bone forming cells and osteoclasts are bone-resorbing cells.
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Bone contains an outer shell of dense, compact bone, whereas the inner region consists of thin, networks of bone called trabeculae. Three cells regulate the bone density and size. Osteoblast and osteolasts synthesize bone, and osteoclasts erode bone.
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Compact bone, also called cortical bone, dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts, leaving only tiny spaces (lacunae) that contain the osteocytes, or bone cells. ... Both types are found in most bones.
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Long bones, such as the femur, are longer than they are wide. Short bones, such as the carpals, are approximately equal in length, width, and thickness. Flat bones are thin, but are often curved, such as the ribs. Irregular bones such as those of the face have no characteristic shape.
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The coccyx, or tailbone, is formed by a fusion of four vertebrae. The bones of the human skeleton are divided into two groups. The appendicular skeleton includes all the bones that form the upper and lower limbs, and the shoulder and pelvic girdles. The axial skeleton includes all the bones along the body's long axis.
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Bone is a strong, flexible and semi-rigid supporting tissue. It can withstand compression forces, and yet it can bend. Like cartilage, and other types of connective tissue, bone is made up of Cells and Extracellular matrix: Cells - which in bone are called osteoblasts and osteocytes, (osteo - bone).
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The osteon or haversian system /həˈvɜːr. ʒən/ (named for Clopton Havers) is the fundamental functional unit of much compact bone. Osteons are roughly cylindrical structures that are typically between 0.25 mm and 0.35 mm in diameter.
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They consist of cancellous tissue enclosed within a thin layer of compact bone. Irregular bones can also be used for joining all parts of the spinal column together. The spine is the place in the human body where the most irregular bones can be found.
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Bone TissueEdit The bones of the human skeleton are comprised of two basic kinds of osseous tissue which differ in texture. Compact Bone appears very smooth and homogeneous.
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C) What is the difference between the bones of the cranium and the facial bones? a. Cranial bones are large and flat where are facial bones are irregular shaped bones and smaller.
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During intramembranous ossification, compact and spongy bone develops directly from sheets of mesenchymal (undifferentiated) connective tissue. The flat bones of the face, most of the cranial bones, and the clavicles (collarbones) are formed via intramembranous ossification.