EXSS 380 Final Exam All Review
Questions Solved Graded A+ 2026/2027
Updated.
The neurotransmitter associated with skeletal muscle depolarization is _____. - Answer
acetylcholine
A change in selective membrane permeability to _____ begins the chain reaction that results in
membrane depolarization. - Answer Na+
The smallest component of the nervous system that contributes to muscle contraction is the
__________. - Answer motor unit
Which type of neuron conducts nerve impulses away from the central nervous system? -
Answer efferent
The ________ area of the cerebral cortex is responsible for integration and interpretation of
information from peripheral receptors. - Answer somatosensory association
Which of the following would be represented by the largest area of the primary motor cortex? -
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? - Answer type 1b
When contraction of the agonist causes inhibition of the antagonist, _____ is occurring. -
Answer reciprocal inhibition
Joint position sense refers to _____. - 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. - Answer closed; open
The _____ is/are responsible for increased nerve conduction velocity. - Answer myelin sheath
Decreased levels of _____ have been associated with Parkinson's disease. - Answer dopamine
, The majority of neurons are _____. - Answer interneurons
A bundle of nerve fibers in the central nervous system is referred to as a _____. - Answer tract
Which type of muscle fiber is activated last during muscle contraction? - Answer type 2b
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 _____. - Answer the relative refractory period
Rank the selective membrane permeability to the following ions from least to greatest. - Answer
Na+, Cl-, K+
The concentration gradient force has a tendency to _____. - Answer move K+ out of the cell
The spinal nerve root that exits the spinal column between the 7th and 8th thoracic vertebrae is
named _____. - Answer T7
The _____ is associated with integration of sensory and motor information to produce smooth
movement. - Answer cerebellum
The mechanism by which a single presynaptic neuron is capable of increasing the EPSP in a
postsynaptic neuron is _____. - Answer temporal summation
The cerebellum has connections to all of the following except _____. - Answer alpha-motor
neurons
The dorsal roots of spinal nerves contain ____. - Answer sensory neurons
More than half of the neurons in the brain are located in the _____. - Answer cerebellum
The spinal stretch reflex is an example of a(an) ________ feedback loop. - Answer negative
Questions Solved Graded A+ 2026/2027
Updated.
The neurotransmitter associated with skeletal muscle depolarization is _____. - Answer
acetylcholine
A change in selective membrane permeability to _____ begins the chain reaction that results in
membrane depolarization. - Answer Na+
The smallest component of the nervous system that contributes to muscle contraction is the
__________. - Answer motor unit
Which type of neuron conducts nerve impulses away from the central nervous system? -
Answer efferent
The ________ area of the cerebral cortex is responsible for integration and interpretation of
information from peripheral receptors. - Answer somatosensory association
Which of the following would be represented by the largest area of the primary motor cortex? -
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? - Answer type 1b
When contraction of the agonist causes inhibition of the antagonist, _____ is occurring. -
Answer reciprocal inhibition
Joint position sense refers to _____. - 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. - Answer closed; open
The _____ is/are responsible for increased nerve conduction velocity. - Answer myelin sheath
Decreased levels of _____ have been associated with Parkinson's disease. - Answer dopamine
, The majority of neurons are _____. - Answer interneurons
A bundle of nerve fibers in the central nervous system is referred to as a _____. - Answer tract
Which type of muscle fiber is activated last during muscle contraction? - Answer type 2b
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 _____. - Answer the relative refractory period
Rank the selective membrane permeability to the following ions from least to greatest. - Answer
Na+, Cl-, K+
The concentration gradient force has a tendency to _____. - Answer move K+ out of the cell
The spinal nerve root that exits the spinal column between the 7th and 8th thoracic vertebrae is
named _____. - Answer T7
The _____ is associated with integration of sensory and motor information to produce smooth
movement. - Answer cerebellum
The mechanism by which a single presynaptic neuron is capable of increasing the EPSP in a
postsynaptic neuron is _____. - Answer temporal summation
The cerebellum has connections to all of the following except _____. - Answer alpha-motor
neurons
The dorsal roots of spinal nerves contain ____. - Answer sensory neurons
More than half of the neurons in the brain are located in the _____. - Answer cerebellum
The spinal stretch reflex is an example of a(an) ________ feedback loop. - Answer negative
