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| skeletal system functions |
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Definition
| Protect organs, store lipids and minderals, providing a site for blood cell formation, and providing a system of levers that muscles use to move body |
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| elastic fibers in extracellular matrix. |
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| has poor blood supply and more collagen and elastic fibers than bone. Flexible |
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| has a large blood supply and highly mineralized with fewer collagen fibers. rigid structure |
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| nose, ears, rib cage, larynx, trachea, and in joints |
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| also known as articulations |
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| connected by short, tough fibrous tissues and are immovable |
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| connected by cartilage and are slightly movable |
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| freely movable joints that are sorrounded by a fibrous capsule lined with a synovial membrane. |
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| secretes synovial fluid in to synovial joint |
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| projection or protuberance of bone |
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| small, rounded projection |
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| larger projection, roughened surface |
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| large projections on the femur |
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| smooth, rounded articular surface |
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| long narrow pointed projection |
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| narrow ridge, not as thick as a hole |
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| depression hollow or cavity |
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| cavity lined with mucous membrane |
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| passageway longer than foreman |
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| small, smooth, nearly flat articular surface |
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| the smooth and homogeneous bone on the outside surface |
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| the porous bone beneath the hard urface composed of small trabeculae |
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| bars of bone that resemeble a framework of steel bars. very strong but lightweight |
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| shaft of the long bone, the smooth surface is composed of compact bone |
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Definition
| ends of the long bone, a thin layer of compact bone with cancelelous bone underneath |
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| a thin area of cartilage between the diaphysis and the epiphysis that provides for longidinal growth, sometimes called growth plate |
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| central hollowed out region containg yellow lipids and red blood cells of bone marrow |
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Definition
| a though membrane sorrounding the outisde of the bone shaft but no the articular ends |
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| bones of the skull, thorax/chest, and vertebral column. |
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| the bones of the pectoral. shoulder girdle, upper limbs, pelvic girdle, and lower limbs. |
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| runs horizontally, dividing the body into top and bottom, or upper and lower parts. |
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above and below - refers to placement along the axis of the body.
- head is superior to chest. legs are inferior to pelvis |
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| toward the midline / away from midline - the big toe is medial to little toe. |
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| back side / belly side - these terms are interchangepble with anterior and posterior. in quadrepeds, interchangable with superior and inferior |
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| toward the trunk / away from the trunk - refer to directions along the limbs. hip is proximal to ankle. wrist is distal from elbow |
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Definition
| flexation decreases the angle of a joint, brings a ventral surfaces together; extension increases the angle of a joint, moving ventral surfaces apart. |
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Definition
| adduction is movement toward the midlne; abduction is movement away from midline |
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Definition
| pronation is movement of the palm downward; supination is the movement of the palm upward |
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Term
| dorsiflexion / plantarflexion |
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Definition
| movement of the ankle joint so that you are standing on your heels ; plantarflexion is movement of the ankle joint so that you are point your toes. |
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| movement of bone around its vertical axis. |
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| movement of a bone so that the proximal end i stabe but the distal end outlines a circle; involves flexion extension, dduction, and abduction |
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| the posterior wall and base of school |
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| large opening at the base of of skull |
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| are small facets on either side of the foramen magnum that articulate with the first cervicle vertebret |
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| small opening just superior o each occipital condyle through which the 12th cranial nerve passes on its way to the tounge |
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| crown is visible , neck is at the gum, and root is below gumb. - connect to maxilla and mandable |
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| part above jaw bone and stablizes nose |
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| fall out and give way to new teeth |
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