nervous system test
cranial nerves
12 pairs
spinal nerves
31 pairs
in the midbrain, pons, and medulla oblongata are housed in the...
brain stem
which of the following is one of the major functions of the pons
breathing
what are the two main functional subdivisions of the nervous system
central and peripheral
what cells form the myelin sheaths around nerve fibers in the PNS?
Schwann cells
the part of the neuron that typically conducts nerve impulses away from the cell body is the ____
axon
white matter
collections of myelinated fibers (tracts)
the thalamus, hypothalamus, and epithalamus collectively constitute the...
diancephalon
motor
efferent
what type of neuron connects sensory and motor neurons in neutral pathways?
efferent neurons
an influx of potassium starts the process of depolarization
false
the myelin sheath insulates the axon and to slow the speed of impulse transmission
false
the nerve impulse travels directly and without pause through one neuron into another
false
A stroke in the primary motor area has caused Don to lose control over his skeletal muscles on the right side of his body. What lobe of his brain was damaged?
frontal lobe
collections of cell bodies on the PNS
ganglia
control of temperature, endocrine activity, metabolism, and thirst are functions associated with the...
hypothalamus
which of the following indicates damage to the primary motor area?
inability to voluntarily move skeletal muscles
the hypothalamus is the "emotional-visceral" center of the brain and, thus, is an important part of the...
limbic system
the vital centers for the control of visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are located in the...
medulla oblongata
gray matter
mostly unmyelinated fibers and cell bodies
Mr. Warren has spinal cord damage that prevents nerve impulses from being carried from the CNS to muscles or glands. What specific type of neuron has been damaged?
motor neuron
bundles of nerve fibers in the PNS
nerves
clusters of cell bodies in the CNS
nuclei
in which cerebral lobe is the primary somatic sensory cortex located?
parietal
the hypothalamus regulates the...
pituitary gland
neurons at rest have ____ inside while keeping ______ outside the membrane.
potassium; sodium
sensory receptors located in muscles and tendons are termed...
proprioceptors
in the motor divisions of the peripheral nervous system, the ____ is voluntry and the __ nervous system is involuntary
somatic; autonomic
which of the following are part of the CNS?
spinal cord; brain
what portion of the diencephalon acts as a relay station for sensory impulses impulses traveling upward to the sensory cortex?
thalamus
bundles of nerve fibers in the CNS
tracts
calcium and neurotransmitters enable the transmission of the nerve impulse from one neuron to another.
true
the internal enviornment of a neuron at rest is slightly negative
true
myelinated fibers (tracts) form______ matter while unmyelinated fibers form _______.
white; gray
Sally has a brain injury; she knows what she wants to say but can't vocalize the words. The part of her brain that deals with the ability to say words properly is the...
Broa's area
sensory
afferent
