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S & F of the Body-
Chapter 6- The Skeletal System
| Question | Answer |
|---|---|
| amphiarthroses | slightly movable joints such as the joint joining the two pubic bones |
| appendicular skeleton | the bones of the upper and lower extremities of the body |
| articular cartilage | cartilage covering the joint ends of bones |
| articulation | joint |
| axial skeleton | the bones of the head, neck, and torso |
| canaliculi | an extremely narrow tubular passage or channel in compact bone |
| chondrocytes | cartilage cells |
| compact bone | dense bone |
| diaphysis | shaft of a long bone |
| diarthroses | freely movable joint |
| epiphyses | ends of a long bone |
| fontanels | "soft spots" on the infant's head; unossified areas in the infant skull |
| hemopoiesis | blood cell formation |
| lacunae | space or cavity; for example, lacunae in bone contain bone cells |
| lamella | thin layer, as of bone |
| medullary cavity | hollow area inside the diaphysis that contains yellow bone marrow |
| osteoblasts | bone-forming cells |
| osteoclasts | bone-absorbing cells |
| osteocytes | bone cells |
| osteon (Haversian systems) | the circular arrangements of calcified matrix and cells that give bone its characteristic appearance |
| pectoral girdle | shoulder girdle; the scapula and clavicle |
| pelvic girdle | connects the legs to the trunk |
| periosteum | tough, connective tissue covering the bone |
| red bone marrow | soft material that fills cavities of the bones; red bone marrow is vital to blood cell formation |
| sinus | a space or cavity inside some of the cranial bones |
| skull | consists of 8 bones that form the cranium, 14 bones that form the face, and 6 tiny bones in the middle ear |
| spine | vertebral column; series of separate bones or vertabrae connected in such a way that they form a flexible rod |
| synarthroses | a joint in which fibrous connective tissue joins bones and holds them together tightly; commonly called sutures |
| synovial membrane | connective tissue membrane lining the spaces between bones and joints that secretes synovial fluid |
| thorax | chest |
| trabeculae | needlelike threads of spongy bone that surround a network of spaces |
| yellow bone marrow | soft material that fills cavities of the bones; yellow bone marrow is inactive fatty tissue |
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