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ISBIBMUSCLES

QuestionAnswer
mark the end of a sarcomere z line
area between myosin filaments, light in color and contain only actin I band
occurs when Na+ channels open on the sarcolemma, muscle fiber membrane action potential of teh muscle fiber
structure that carries an action potential to the neuromuscular junction. motor neuron
an action potential moving through the T-tubules cause this to happen release of Ca+2 from the sarcoplasmic reticulum.
substance that binds to troponin on the actin myofilaments to expose mysin binding sites Ca+2
freely movable joint that can rotate ball and socket joint, hip and shoulder
joint that only allows flexion and extension hinge joint, elbow and knee
connect bone-bone ligaments
connect muscle to bone tendon
lubricates to reduce friction and provides nutrients to the cells of the cartilage synovial fluid
humerus acts as a lever that allows anchorage of the muscles of the elbow
radius acts as a lever for the biceps muscle
ulna acts as a lever for the triceps muscle
striated muscle fibers containing intercalated disks cardiac muscle
non-striated, innvoluntary muscle smooth muscle
striated voluntary muscle skeletal muscle tissue
cytoplasm of muscle fibers sarcoplasm
thin, 8nm, filaments with myosin-binding sites, including two regulatory proteins tropomyosinand troponin actin
thick, 16nm, filaments with heads that bind to actin myosin
the antagonist of the triceps muscle biceps muscle
Created by: bobolinx
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