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false

T/F-smooth muscle is under voluntary control

true

T/F- muscle tissue plays a major role in maintenance of homeostasis

true

T/F- during muscle contraction, the myosin heads pull on the actin filaments

true

T/F- skeletal muscle tissue is striated and voluntary

false

T/F- any stimulus from a neuron can initiate a muscle contraction

true

T/F- the detachment of myosin heads from actin requires ATP

false

T/F- the myofibrils of skeletal muscle fibers are composed of three types of myofilaments

true

T/F- one by-product of skeletal muscle contraction is heat

false

T/F- the ends of axon terminals enlarge into swellings called motor end plates

false

T/F- muscle tone requires the contraction of an entire muscle

true

T/F- the power stroke is the force causing the actin filaments to slide between the myosin filaments

true

T/F- skeletal muscles contain a mixture of all three muscle fibers (SO, FOG, FG)

A band

the portion of the sarcomere mostly composed of thick filaments is the

deep fascia

structure made of dense irregular connective tissue that holds muscles together and separates them into functional groups-

elastin

what protein is not a myofilament?

cardiac muscle

what is striated and involuntary?

myoglobin

the pigment in the muscle fibers that stores oxygen

tetanus

a sustained contraction of a muscle

fiber thickness

what is NOT a characteristic used to name skeletal muscles?

cardiac muscle

intercalated discs are found in

myositis

inflammation of muscle fibers is called

deltoid

a muscle that has THREE origins is called a

contractility

ability for a muscle to shorten

liver

most of the lactic acid produced by anaerobic respiration in muscle fibers is reconverted into glucose in the-

perimysium

bundles of muscle fibers are covered by

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