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13 Cards in this Set
- Front
- Back
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3 function of skeletal system |
Protect Support Shape |
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Axial skeleton |
-skull -vertebrae -sternum - ribs -hyoid bone |
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Appendicular skeleton |
-Pectoral girdle (clavicle, scapula) - Upper limbs (upper arm, forearm, wrist, hand, fingers) -pelvic girdle (coxal bones) -lower limbs (upper leg, lower leg, ankle, foot, toes) |
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Function of periosteum |
-covers external surface of bone except joints. - outer "fibrous layer" is dense irregular connective tissue. -inner "osteogenic layer" consists of stem cells that make all bone cells except bone destroying ones. -provides anchoring points for tendons and ligaments |
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Function of diaphysis |
-forms long axis of the bone
-made of relatively thick "collar" of compact bone that surrounds a central medullary cavity. |
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Medullary cavity |
In adults, medullary cavity contains fat (yellow marrow) and is called yellow marrow cavity |
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Epiphysis: proximal, distal, what is the purpose of the epiphyseal plate/line? |
The epiphyseal plate is present in children, a disk of hyaline cartilage that grows through childhood to lengthen bone. By adulthood it's the epiphyseal line. |
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What is spongy bone and it's function? |
A honeycomb of small needle like or flat pieces called trabeculae which are filled with red or yellow bone marrow. |
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Compact bone |
The bones dense outer layer that looks smooth and solid. |
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Endosteum function |
- It's a delicate connective tissue membrane -covers internal bone surfaces - covers trabeculae of spongy bone -contains osteogenic cellar that can make bone. |
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Osteon function |
Tiny weight bearing pillars |
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Lamellae function |
The matrix tube that contains the collagen fibers. |
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Osteocyte function |
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