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skeletal system
| Term | Definition |
|---|---|
| what does the red bone marrow do? | forms blood cells - hematopoiesis stores inorganic materials - magnesium, calcium, sodium, potassium |
| what does the yellow bone marrow do? | storage of fat and nutritious elements |
| axial skeleton (middle) | skull, neck, trunk, vertebral column, thoracic cage (12 ribs +sternum) |
| appendicular skeleton (outer) | limbs - arms legs and hips |
| pectoral girdle (upper) | arms, clavicle bone, scapula |
| pelvic girdle (lower) | legs, coxal bones (hip) |
| flat bone function + examples (ex Halloween) | protect - sternum ribs skull |
| long bone function + examples (lower) | weight support- fibia, fibula, humerus, femur (legs) |
| short bone function + examples (small) | stable movement - carpals, tarsals (wrist) |
| irregular bone function + examples | protection of organs - pelvis, vertebrae |
| sesamoid bone function + examples | reinforce tendons - patella (kneecap) |
| epiphysis - END | end of the bone |
| diaphysis - LONG | shaft of bone |
| articular cartilage | padding to ends |
| periosteum - "around" | membrane |
| medullary cavity - inner | inside the diaphysis has bone marrow |
| endosteum- more inner | lining of the medullary cavity |
| compact bone | strong wall of diaphysis |
| spongy bone | epiphysis located (red marrow) |
| epiphyseal line- upon | line that marks end of bone growth (between epiphysis and diaphysis) |
| bone tissue is also called ... | osseous tissue (collagen and salts) calcium and phosphate |
| calcium is found mainly --- | in the face and bones |
| what is an osteon? | basic units in a compact bone |
| what is the difference between osteoclasts and osteoblasts | clast - consume bone blast- build osteocytes |
| what is heterotopic ossification? | abnormal bone growth in non-skeletal regions (tissues) |
| more cartilage between bones means... | the person is younger, still has bone to grow |
| how do bones form? process ... ossification means! | hyaline cartilage into bone tissue , first center diameter increased, second center length increased |
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