Memmler's Chapter 8: Muscular System
UPDATED ACTUAL Questions and
CORRECT Answers
acetylcholine - CORRECT ANSWER - Neurotransmitter; released at synapses within the
nervous system and at the neuromuscular junction.
actin - CORRECT ANSWER - One of the two contractile proteins in muscle cells, the
other being myosin.
action potential - CORRECT ANSWER - Rapid depolarization and repolarization of the
plasma membrane capable of spreading down the neuron or muscle membrane; nerve impulse.
agonist - CORRECT ANSWER - Muscle that contracts to perform a given movement.
antagonist - CORRECT ANSWER - Muscle that has an action opposite that of a given
movement or muscle; substance that opposes the action of another substance.
atrophy - CORRECT ANSWER - Wasting or decrease in size of a part.
contractility - CORRECT ANSWER - Capacity to undergo shortening, as in muscle tissue.
excitability - CORRECT ANSWER - In cells, the ability to transmit an electric current
along the plasma membrane
fascicle - CORRECT ANSWER - In cells, the ability to transmit an electric current along
the plasma membrane
, glycogen - CORRECT ANSWER - Compound built from glucose molecules that is stored
for energy in the liver and muscles.
insertion - CORRECT ANSWER - Muscle attachment connected to a movable part.
membrane potential - CORRECT ANSWER - Difference in electric charge on either side
of a plasma membrane; transmembrane potential
motor unit - CORRECT ANSWER - Group consisting of a single neuron and all the
muscle fibers it stimulates.
myalgia - CORRECT ANSWER - muscular pain
myosin - CORRECT ANSWER - one of the two contractile proteins in muscle cells, the
other being actin
neuromuscular junction - CORRECT ANSWER - Point at which a neuron's axon contacts
a muscle cell.
neurotransmitter - CORRECT ANSWER - chemical released form the ending of an axon
that enables a nerve impulse to cross a chemical synapse
origin - CORRECT ANSWER - Source; beginning; muscle attachment connected to a
nonmoving part.
prime mover - CORRECT ANSWER - the main muscle that produces a given movement
sarcomere - CORRECT ANSWER - contracting subunit of skeletal muscle
UPDATED ACTUAL Questions and
CORRECT Answers
acetylcholine - CORRECT ANSWER - Neurotransmitter; released at synapses within the
nervous system and at the neuromuscular junction.
actin - CORRECT ANSWER - One of the two contractile proteins in muscle cells, the
other being myosin.
action potential - CORRECT ANSWER - Rapid depolarization and repolarization of the
plasma membrane capable of spreading down the neuron or muscle membrane; nerve impulse.
agonist - CORRECT ANSWER - Muscle that contracts to perform a given movement.
antagonist - CORRECT ANSWER - Muscle that has an action opposite that of a given
movement or muscle; substance that opposes the action of another substance.
atrophy - CORRECT ANSWER - Wasting or decrease in size of a part.
contractility - CORRECT ANSWER - Capacity to undergo shortening, as in muscle tissue.
excitability - CORRECT ANSWER - In cells, the ability to transmit an electric current
along the plasma membrane
fascicle - CORRECT ANSWER - In cells, the ability to transmit an electric current along
the plasma membrane
, glycogen - CORRECT ANSWER - Compound built from glucose molecules that is stored
for energy in the liver and muscles.
insertion - CORRECT ANSWER - Muscle attachment connected to a movable part.
membrane potential - CORRECT ANSWER - Difference in electric charge on either side
of a plasma membrane; transmembrane potential
motor unit - CORRECT ANSWER - Group consisting of a single neuron and all the
muscle fibers it stimulates.
myalgia - CORRECT ANSWER - muscular pain
myosin - CORRECT ANSWER - one of the two contractile proteins in muscle cells, the
other being actin
neuromuscular junction - CORRECT ANSWER - Point at which a neuron's axon contacts
a muscle cell.
neurotransmitter - CORRECT ANSWER - chemical released form the ending of an axon
that enables a nerve impulse to cross a chemical synapse
origin - CORRECT ANSWER - Source; beginning; muscle attachment connected to a
nonmoving part.
prime mover - CORRECT ANSWER - the main muscle that produces a given movement
sarcomere - CORRECT ANSWER - contracting subunit of skeletal muscle
