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20 Cards in this Set

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articulations
joints; perform 2 functions hold bones together and allow skeleton some flexibility
amphiarthroses
slightly moveable joints
synarthroses
immovable joints
diarthroses
freely movable joints
fibrous joints
bone joined by fibrous tissue generally little or no movement(amphiarthroses & synarthroses
2 major types of fibrous joints + 1
syndesmoses and sutures +
gomphosis(tooth in bony socke tby periodontal ligament)
sutures
irregular bone interlock and are united by very short connective tissue fibers
syndesmoses
articulating bones connected by short ligaments distal end of tibia and fibula
cartilaginous joints
articulating bone ends are connected by a plate or pad of cartilage
symphyses
bones connected by a broad, flat disc of fibrocartilage
(intervertebral joints and pubic symphysis)
2 major types of cartilaginous joints
symphyses(growing together) and synchondroses
synchondroses
bony portions connected by hyaline cartilage (articulation of costal cartilage of first rib w/sternum and epiphseal plate of growing children
synovial joints
articulating bone ends are separated by a joint cavity containing synovial fluid; all synovial joints are diarthroses
skeletal muscle
bulk of body's muscle
skeletal muscle a.k.a.
voluntary and striated muscle
fibers
long dylindrical cells
sarcolemma
cell membrane of a muscle fiber(cell)
myofibril
threadlike structure, extending longitudinally through a muscle fiber
myofilaments
small threadlike structures mainly actin myosin
sarcomeres
actual contractile units of muscle