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st 107
skeletal system
28
Health Care
Professional
06/10/2009

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Term
appendicular
Definition
pertaining to limbs or part appended to another
Term
articular system
Definition
system of the body dealin with articulations
Term
functions of the skeletal system
Definition
1. support, gives shape to the body 2. manufactures blood cells in red bone marrow 3. protects vital and delicate organs 4. stores calcium and phosphorus (doesn't produce)
Term
sesamoid bones
Definition
embedded in tendon or capsule; patella, big toe (hallux)
Term
flat bone
Definition
illium, ribs, cranial bones
Term
long bones
Definition
femur, humerous, fibula, ulna, tibia, radius, phlanges
Term
regular bone
Definition
hyoid
Term
irregular bones
Definition
sphenoid, coccyx, mandible,sacrum
Term
short bones
Definition
tarsals, carpals
Term
materials that make up the composition of the bones
Definition
1. inorganic salts(calcium and phosphorus), organic salts, water
Term
crest
Definition
a ridge
Term
spinous process or spine
Definition
a sharp projection
Term
tuberosity
Definition
a large, rounded projection
Term
fossa
Definition
a hollow or depression (temporal bone)
Term
bone marrow
Definition
may be red or yellow; soft tissue in the hollows of long bones
Term
metaphysis
Definition
wide part at the extremity of the shaft of a long bone that supports the epiphysis
Term
characteristics of bone marrow
Definition
1. manufactures rbc's, wbc's and platelets 2. consists of two type: red bone marrow and yellow bone marrow 3. in adulthood, red marrow is contained in only a few locations such as diploe, ribs, sternum, and vertebral bodies. (yellow=fatty connective)
Term
parts of appendicular skeleton
Definition
1. are attached to the axis as appendages 2. composed of 126 bones 3. consist of the shoulder and pelvic girdles, and the upper and lower extremities
Term
parts of axial skeleton
Definition
1. composed of 80 bones 2. forms the upright part or axis of the body 3. consists of hyoid, the skull, vertebral column, ribs and sternum
Term
characteristics of ribs and the sternum
Definition
1. form the thoracic cavity 2. 12 pairs of ribs 3. upper 7 pair are called "true ribs" 4. "true ribs" are attached to the sternum by costal cartliages 5. the lower 5 pair of ribs are called "false ribs" 6. "false ribs" don't attach to sternum directly 7. the lower 2 pair of false ribs do not attach at all, and are called "floating ribs" 8. the upper 3 pair of false ribs attach to the seventh costal cartilage
Term
divisions of sternum
Definition
menubrium (highest) gladiolus (middle) xiphoid (lowest)
Term
ligaments
Definition
hold bones together
Term
ball and socket
Definition
the round-shaped head fits into a concave socket; provides the widest range of motion, wth movement in all planes in addition to rotation; hip and femur, humerus and glenoid cavity of scapula (shoulder joint)
Term
hinge
Definition
a conves surface fits into a concavity; has an angular movement in one direction, like a door; knee joint, elbow joint, and finger joint
Term
pivot joint
Definition
a pivot-like process rotates within a bony fossa around a longitudinal axis; motion is limited to uniaxial rotation; articulation between axia and atlas for rotation of head
Term
condyloid joints
Definition
oval-shaped condyloid fits into an eliptical cavity; motion is possible in 2 planes-right angles to each other; wrist
Term
saddle joint
Definition
articular surface of each bone is concave in one direction and convex in another; movement possible in 2 directions; joint between carps and thumb metacarpals
Term
gliding joint
Definition
articular surfaces are flat, or slightly concave, and the other slightly conves; permis a nonaxial gliding movement only; joints between carpas and between tarsals
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