EXSS 380 Review Questions
The neurotransmitter associated with skeletal muscle depolarization is
_____. - correct answer ✔ ✔ acetylcholine
A change in selective membrane permeability to _____ begins the chain
reaction that results in membrane depolarization. - correct answer ✔
✔ Na+
The smallest component of the nervous system that contributes to
muscle contraction is the __________. - correct answer ✔ ✔ motor
unit
Which type of neuron conducts nerve impulses away from the central
nervous system? - correct answer ✔ ✔ efferent
The ________ area of the cerebral cortex is responsible for integration
and interpretation of information from peripheral receptors. - correct
answer ✔ ✔ somatosensory association
Which of the following would be represented by the largest area of the
primary motor cortex? - correct answer ✔ ✔ muscles of the palmar
surface of the hand
,A neuroscientist is measuring activity from a sensory neuron associated
with the biceps brachii. During isometric muscle contraction, this neuron
displays high-frequency activity. What type of neuron is the researcher
measuring? - correct answer ✔ ✔ type 1b
When contraction of the agonist causes inhibition of the antagonist,
_____ is occurring. - correct answer ✔ ✔ reciprocal inhibition
Joint position sense refers to _____. - correct answer ✔ ✔
proprioception
Whereas a(an) __________ loop system utilizes peripheral
information/feedback in the generation of neuromuscular responses,
a(an) ____________ loop system is preprogrammed in nature. - correct
answer ✔ ✔ closed; open
The _____ is/are responsible for increased nerve conduction velocity. -
correct answer ✔ ✔ myelin sheath
Decreased levels of _____ have been associated with Parkinson's
disease. - correct answer ✔ ✔ dopamine
, The majority of neurons are _____. - correct answer ✔ ✔
interneurons
A bundle of nerve fibers in the central nervous system is referred to as a
_____. - correct answer ✔ ✔ tract
Which type of muscle fiber is activated last during muscle contraction? -
correct answer ✔ ✔ type 2b
The number of muscle fibers innervated by a single motor neuron is
identified by the _____________. - correct answer ✔ ✔ innervation
ratio
The interval following generation of the action potential when a neuron
can be depolarized only by an extraordinarily large EPSP refers to
_____. - correct answer ✔ ✔ the relative refractory period
Rank the selective membrane permeability to the following ions from
least to greatest. - correct answer ✔ ✔ Na+, Cl-, K+
The concentration gradient force has a tendency to _____. - correct
answer ✔ ✔ move K+ out of the cell
The neurotransmitter associated with skeletal muscle depolarization is
_____. - correct answer ✔ ✔ acetylcholine
A change in selective membrane permeability to _____ begins the chain
reaction that results in membrane depolarization. - correct answer ✔
✔ Na+
The smallest component of the nervous system that contributes to
muscle contraction is the __________. - correct answer ✔ ✔ motor
unit
Which type of neuron conducts nerve impulses away from the central
nervous system? - correct answer ✔ ✔ efferent
The ________ area of the cerebral cortex is responsible for integration
and interpretation of information from peripheral receptors. - correct
answer ✔ ✔ somatosensory association
Which of the following would be represented by the largest area of the
primary motor cortex? - correct answer ✔ ✔ muscles of the palmar
surface of the hand
,A neuroscientist is measuring activity from a sensory neuron associated
with the biceps brachii. During isometric muscle contraction, this neuron
displays high-frequency activity. What type of neuron is the researcher
measuring? - correct answer ✔ ✔ type 1b
When contraction of the agonist causes inhibition of the antagonist,
_____ is occurring. - correct answer ✔ ✔ reciprocal inhibition
Joint position sense refers to _____. - correct answer ✔ ✔
proprioception
Whereas a(an) __________ loop system utilizes peripheral
information/feedback in the generation of neuromuscular responses,
a(an) ____________ loop system is preprogrammed in nature. - correct
answer ✔ ✔ closed; open
The _____ is/are responsible for increased nerve conduction velocity. -
correct answer ✔ ✔ myelin sheath
Decreased levels of _____ have been associated with Parkinson's
disease. - correct answer ✔ ✔ dopamine
, The majority of neurons are _____. - correct answer ✔ ✔
interneurons
A bundle of nerve fibers in the central nervous system is referred to as a
_____. - correct answer ✔ ✔ tract
Which type of muscle fiber is activated last during muscle contraction? -
correct answer ✔ ✔ type 2b
The number of muscle fibers innervated by a single motor neuron is
identified by the _____________. - correct answer ✔ ✔ innervation
ratio
The interval following generation of the action potential when a neuron
can be depolarized only by an extraordinarily large EPSP refers to
_____. - correct answer ✔ ✔ the relative refractory period
Rank the selective membrane permeability to the following ions from
least to greatest. - correct answer ✔ ✔ Na+, Cl-, K+
The concentration gradient force has a tendency to _____. - correct
answer ✔ ✔ move K+ out of the cell
