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25 terms

Anatomy ch. 8

STUDY
PLAY
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