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Question
A ____________________ unit consists of a motor neuron, its axon, and the muscle fibers it innervates.
Answer
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Related questions
Q:
The ____________________ of the frontal lobe is the region involved in initiation of the motor act.
Q:
Bilateral damage to the parahippocampal lobe will result in profound ____________________ deficit.
Q:
____________________ refers to difficulty naming objects.
Q:
Nonfluent aphasia, also known as ____________________ aphasia, arises from frontal lobe lesions.
Q:
Auditory information presented to the right ear is processed predominantly by the ____________________ hemisphere.
Q:
The ____________________ association area includes portions of the temporal, parietal, and occipital lobes (Brodmann areas 39, 40, and portions of 19, 21, 22, and 37), and receives input from auditory, visual, and somatosensory regions, permitting the integration of this information into language function.
Q:
____________________ dysarthria arises from damage to lower motor neurons or their cell bodies.
Q:
Brodmann area number ____________________ is the premotor region.
Q:
Theories of ____________________ state that attempts to localize function are generally fruitless and that the brain functions as a whole.
Q:
____________________ sensors transduce information about muscle length.
Q:
A(n) ____________________ potential is a change in electrical potential that occurs when the cell membrane is stimulated adequately to permit ion exchange between intra- and extracellular spaces.
Q:
In the neuromuscular junction of skeletal muscle,
a. acetylcholine (ACH) activates muscle function.
b. gamma aminobutyric acid (GABA) activates muscle function.
c. dopamine (DA) activates muscle function.
d. none of the above.
Q:
Inhibition causes
a. depolarization. b. hyperpolarization.
c. repolarization. d. none of the above.
Q:
IPSP refers to
a. a potential that is excitatory in nature.
b. use of the neurotransmitter acetylcholine (ACH).
c. an inhibitory potential.
d. an input potential.
Q:
A neuron can fire approximately once every
a. 1 ms. b. 10 ms.
c. 100 ms. d. 1,000 ms.
Q:
The period following depolarization when a neuron cannot fire is termed the
a. absolutely (absolute) refractory period.
b. relatively (relative) refractory period.
c. hypostyle (ascending) refractory period.
d. adductory (closing) refractory period.
Q:
Commands for voluntary functions originate in the
a. spinal cord. b. brainstem.
c. cerebellum. d. cerebrum.
Q:
The superior and inferior colliculi are found at the level of the ____________________ in the brainstem.
Q:
The obex is a landmark of the ____________________ of the brainstem.
Q:
Fibers of the corticospinal tract that do not decussate at the pyramids descend uncrossed as the ____________________ tract.
Q:
The 31 pairs of ____________________ arise from the spinal cord.
Q:
The term white matter refers to the specific component of a neuron known as ____________________.
Q:
Synaptic vesicles are found within the ____________________.
Q:
Protective, reactive responses such as goosebumps, sweating, and pupil dilation are triggered by the
a. sympathetic nervous system. b. nonsympathetic nervous system.
c. emotional nervous system. d. irrational nervous system.
Q:
Vision is mediated by
a. thermoreceptors. b. photoreceptors.
c. phonoreceptors. d. proprioceptors.
Q:
The term for the ability to recognize an object through touch is
a. stereognosis. b. agnosia.
c. gnosis. d. none of the above.
Q:
The premotor region is found in the ____________________ lobe.
Q:
Brocas area is found in the ____________________ lobe.
Q:
The ____________________ divides the parietal and frontal lobes.
Q:
Deep infoldings of the cortex are called ____________________.