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Memmler-s Chapter 8 Muscular System Exam Questions and Answers
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Memmler-s Chapter 8 Muscular System Exam Questions and Answers
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Memmler's Chapter 8: Muscular SystemExam Questions and Answers
acetylcholine - Answers -Neurotransmitter; released at synapses within the nervous
system and at the neuromuscular junction.
actin - Answers -One of the two contractile proteins in muscle cells, the other being
myosin.
action potential - Answers -Rapid depolarization and repolarization of the plasma
membrane capable of spreading down the neuron or muscle membrane; nerve impulse.
agonist - Answers -Muscle that contracts to perform a given movement.
antagonist - Answers -Muscle that has an action opposite that of a given movement or
muscle; substance that opposes the action of another substance.
atrophy - Answers -Wasting or decrease in size of a part.
contractility - Answers -Capacity to undergo shortening, as in muscle tissue.
excitability - Answers -In cells, the ability to transmit an electric current along the plasma
membrane
fascicle - Answers -In cells, the ability to transmit an electric current along the plasma
membrane
glycogen - Answers -Compound built from glucose molecules that is stored for energy in
the liver and muscles.
insertion - Answers -Muscle attachment connected to a movable part.
membrane potential - Answers -Difference in electric charge on either side of a plasma
membrane; transmembrane potential
motor unit - Answers -Group consisting of a single neuron and all the muscle fibers it
stimulates.
myalgia - Answers -muscular pain
, myosin - Answers -one of the two contractile proteins in muscle cells, the other being
actin
neuromuscular junction - Answers -Point at which a neuron's axon contacts a muscle
cell.
neurotransmitter - Answers -chemical released form the ending of an axon that enables
a nerve impulse to cross a chemical synapse
origin - Answers -Source; beginning; muscle attachment connected to a nonmoving
part.
prime mover - Answers -the main muscle that produces a given movement
sarcomere - Answers -contracting subunit of skeletal muscle
spasm - Answers -sudden and involuntary muscular contraction
synapse - Answers -Source; beginning; muscle attachment connected to a nonmoving
part.
synergist - Answers -Substance or structure that enhances the work of another. A
muscle that works with a prime mover to produce a given movement.
tendon - Answers -Cord of regular dense connective tissue that attaches a muscle to a
bone.
tonus - Answers -Partially contracted state of muscle; also, tone.
tropomyosin - Answers -Protein that works with troponin to regulate contraction in
skeletal muscle.
tropinin - Answers -Protein that works with tropomyosin to regu- late contraction in
skeletal muscle.
aer/o - Answers -air, gas
an- - Answers -not, without
iso- - Answers -same, equal
-lysis - Answers -separation, dissolving
metr/o - Answers -measure
my/o - Answers -muscle
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