Muscular System Test Review Question Preview (ID: 49651)


This One Will Help You For The Ch. 8 Muscular System Test. TEACHERS: click here for quick copy question ID numbers.

Functions of muscle include ___________.
a) the heartbeat
b) muscle tone
c) moving body parts
d) all of the choices are correct

The amount of oxygen needed to support the conversion of lactic acid to glucose by the liver is called the ___________.
a) refractory quantity
b) oxygen debt
c) aerobic conversion
d) lactate debt

Neurotransmitter molecules are stored in vesicles within ___________.
a) motor units
b) sarcomeres
c) myofibrils
d) motor neuron endings

In a recording of a muscle twitch, the delay between the time a stimulus is applied and the time the muscle responds is called the _______________.
a) latent period
b) contraction period
c) relaxation period
d) recovery period

A motor unit typically includes _____________.
a) muscle fibers only
b) motor neurons only
c) several motor neurons and one muscle fiber
d) one motor neuron and several muscle fibers

The increase in the number of motor units activated as a result of more intense stimulation is called _________.
a) latency
b) recruitment
c) threshold stimulation
d) summation

Compared to skeletal muscle, smooth muscle ________.
a) contracts more slowly and relaxes more slowly
b) contracts more slowly and relaxes more rapidly
c) contracts more rapidly and relaxes more slowly
d) contracts more rapidly and relaxes more rapidly

Rigor mortis that occurs in skeletal muscles a few hours after death is due to ________.
a) excessive ATP decreased membrane permeability to calcium ions
b) lack of ATP increased membrane permeability to calcium ions
c) persistent stimulation by motor neuron
d) a decrease in the number of muscle fibers

Endomysium separates individual muscle fibers from each other.
a) True
b) False
c)
d)

The minimal strength of stimulation needed to elicit a muscle contraction is called the threshold stimulus.
a) True
b) False
c)
d)

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