musclesssss
Terms
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- narrow, tapered rod-shaped cells; nonstriated, uninucleated fibers; occurs in walls of internal organs and blood vessels; involuntary
- smooth muscle
- striated, tubular, branched, uninucleated fibers; involuntary; occurs in walls of heart
- cardiac muscle
- striated, tubular, multinucleated fibers; usually attached to skeleton; voluntary
- skeletal muscle
- areolar (loose) connective tissue; blood capillaries and nerve fibers reach each muscle fiber by way of this
- endomysium
- second layer of muscle fibers in connective tissue; grouped into bundles
- fasicles
- fasicles with a sheath of connective tissue
- perimysium
- muscle itself is covered by this connective tissue layer
- epimysium
- a layer of fibrous tissue that separates muscles from each other and the skin
- fascia
- strong, fibrous; connects the muscle to a bone
- tendon
- bundles of myofilaments (actin and myosin); sarcomeres linked end to end
- myofibril
- light band
- I band
- dark band
- A band
- center of sarcomere
- M line
- thick filaments only
- H zone
- border of the sarcomere where thin filaments attach
- Z line
- series of steps that being with excitation at the ________ junction
- neuromuscular
- action potential along sarcolemma and down T-tubule causes release of ______ from cisternae of SR
- calcium