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Bone types
Stack #68210
| Question | Answer |
|---|---|
| types of bone | long, short, flat, irregular. |
| long bones | longer than they are wide. Ex: femur, tibia, fibula, humerus, raidus, ulna, phalanges. |
| short bones | cube shaped. ex: wrist bones(carpals) and ankle bones(tarsals) |
| flat bones | thin, flattened, usually curve. Ex: crainal, sternum, ribs, scapulae(shoulder blades)offers much protection and surface for muscle attachment by tendons. |
| irregular bones | not like others, Ex: spinal column, vertabrae. |
| diaphysis | known as the shaft, has two epiphyses, two metaphyses, articular cartilage, periosteum, medullary cavity, and an endosteum.. |
| shaft | makes up most of the bone length, contains contact bone - dense bone with few spaces. |
| epiphysis | there are two, top one is call proximal epiphysis, bottom is the distal epiphysis. they are the ends of the long bone. consists of thin layer compact bone around spongy bone. |
| metaphysis | region within the epiphysis, contains epiphyseal plate - layer of hyaline cartilage, where long bone grows in length, the plate is replaced by bone called epiphyseal line when bone growth stops. |
| articular cartilage | thin layer of hyaline cartilage, covers epiphysis, where it forms a joint. |
| periosteum | thin layer of dense irregular ct., covers all long bones, except articular cartilage, contains bone-forming cells for growth and healing fractures, nourishes bone tissue with nutrient blood, protects bone, point of attachment for ligaments and tendons. |
| medullary cavity | is the marrow cavity in the center of the diaphysis, contains fatty yellow marrow in adults and red blood cell marrow in infants. |
| endosteum | a thin membrane that lines the inside of the medullary cavity, contains bone-forming cells |