EXSS 380 Exam 1 Test Questions Fully
Solved 2026/2027.
The ______ is responsible for increased nerve conduction velocity. - Answer myelin sheath
depletion of the neurotransmitter_____ is associated with Alzheimer's disease. - Answer
serotonin
input to the soma is achieved via the - Answer dendrite
the neurotransmitter associated with skeletal muscle depolarization is - Answer acetylcholine
decreased levels of ____ have been associated with Parkinson's disease. - Answer dopamine
The majority of neurons are - Answer association neurons
a bundle of somas in the CNS is referred to as a - Answer nucleus
in general, a change in selective membrane permeability to ___ begins the chain reaction that
results in action potential - Answer sodium
____ has the greatest concentration outside the cell - Answer sodium
which of the following is responsible for inhibition of a neuron? - Answer movement of
potassium across the membrane
the smallest component of the nervous system that contributes to muscle contraction is the -
Answer motor unit
which type of muscle fiber is activated last during muscle contraction? - Answer type IIb
the number of muscle fibers innervated by a single motor neuron is identified by the - 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 the - Answer relative refractory period
Solved 2026/2027.
The ______ is responsible for increased nerve conduction velocity. - Answer myelin sheath
depletion of the neurotransmitter_____ is associated with Alzheimer's disease. - Answer
serotonin
input to the soma is achieved via the - Answer dendrite
the neurotransmitter associated with skeletal muscle depolarization is - Answer acetylcholine
decreased levels of ____ have been associated with Parkinson's disease. - Answer dopamine
The majority of neurons are - Answer association neurons
a bundle of somas in the CNS is referred to as a - Answer nucleus
in general, a change in selective membrane permeability to ___ begins the chain reaction that
results in action potential - Answer sodium
____ has the greatest concentration outside the cell - Answer sodium
which of the following is responsible for inhibition of a neuron? - Answer movement of
potassium across the membrane
the smallest component of the nervous system that contributes to muscle contraction is the -
Answer motor unit
which type of muscle fiber is activated last during muscle contraction? - Answer type IIb
the number of muscle fibers innervated by a single motor neuron is identified by the - 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 the - Answer relative refractory period
