EXSS 380 Review Exam UPDATED
ACTUAL QUESTIONS AND CORRECT
ANSWERS
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 spinal nerve root that exits the spinal column between the 7th and 8th thoracic vertebrae is named
_____. - CORRECT ANSWER T7
ACTUAL QUESTIONS AND CORRECT
ANSWERS
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 spinal nerve root that exits the spinal column between the 7th and 8th thoracic vertebrae is named
_____. - CORRECT ANSWER T7
