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RAD 110 Quiz 3
| Question | Answer |
|---|---|
| axial skeleton | supports head + trunk, 80 bones |
| axillary skeleton | provides means for movement, 126 bones |
| compact bone | strong, dense, outer layer |
| spongy bone | inner, less dense layer, contains spiculated network called trabeculae |
| trabeculae | filled with yellow and red marrow which produce white blood cells |
| periosteum | tough, fibrous connective tissue that covers bone |
| endosteum | lines marrow cavity |
| intramembraneous ossification | forms flat bones |
| endochondral ossification | creates short, irregular, and long bones, occurs in primary + secondary development |
| long bones | found in limbs, have a body and two articular ends |
| short | consist of cancellous bone with thin outer layer of compact bone, ex: carpals |
| flat | consist of two plates and compact bone, ex: sternum, cranium |
| irregular | perculiarly shaped - veterbrae and facial bones |
| sesamoid | small and oval, develop inside + beside tendons, largest is patella |
| synarthroses (re: joint mobility) | immovable |
| ampiarthroses (re: joint mobility) | slightly movable |
| diarthroses (re: joint mobility) | freely movable |
| types of joint classification | structural, functional |
| three types of structural joints | fibrous, cartilaginous, synovial |
| three types of functional joints | synathroses (immovable), ampiarthroses (slightly movable), diathroses (freely movable) |
| three types of fibrous joints | suture, syndesmosis, gomphosis |
| two types of cartilaginous joints | synchodrosis, symphysis |
| synovial joints | gliding, hinge, ball and socket, pivot, ellipsoid, saddle |