PSL 250 Exam 3 Questions With Correct
Answers
What are the two divisions of the autonomic nervous system (ANS)? -
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CORRECT ANSWER✔✔-Sympathetic: Thoracolumbar region. Consists of
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nerves arising from the thorax and lumbar regions of the spinal cord.
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Parasympathetic: Craniosacral region. Consists of nerves arising from
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the brain and sacral region of the spinal cord.
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What are the target tissues/organs of the ANS? - CORRECT
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ANSWER✔✔-Cardiac muscle, smooth muscle, adipose and glands. | | | | | |
What are the control centers of the ANS? - CORRECT ANSWER✔✔-
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Medulla, pons and hypothalamus.
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What division of the nervous system do long reflexes integrate with?
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Short reflexes? - CORRECT ANSWER✔✔-Long reflexes: CNS
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Short reflexes: PNS
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What are aggregations of cell bodies referred to in the CNS? - CORRECT
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ANSWER✔✔-nuclei
, What are aggregations of cell bodies referred to in the PNS? - CORRECT
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ANSWER✔✔-ganglia
Where are the autonomic motor nuclei specifically located within the
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gray matter of the spinal cord? - CORRECT ANSWER✔✔-in the anterior
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horn, posterior to the cell bodies of the somatic motor neurons.
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Where are the visceral sensory nuclei specifically located within the gray
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matter of the spinal cord? - CORRECT ANSWER✔✔-in the posterior
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horn, anterior to the cell bodies of the somatic sensory neurons.
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What are the differences in lengths of the axons (both pre- and
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postganglionic) between the parasympathetic nervous system (PNS) and
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the sympathetic nervous system (SNS)? - CORRECT ANSWER✔✔-PNS:
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Pre-ganglionic: long |
Post-ganglionic: short |
SNS:
Pre-ganglionic: short |
Postganglionic: long |
Why does this difference exist? - CORRECT ANSWER✔✔-because in the
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PNS the ganglia are distant from the spinal cord and are often close to,
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and sometimes within, the organ where the target cell is located.
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Answers
What are the two divisions of the autonomic nervous system (ANS)? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-Sympathetic: Thoracolumbar region. Consists of
| | | | | |
nerves arising from the thorax and lumbar regions of the spinal cord.
| | | | | | | | | | |
Parasympathetic: Craniosacral region. Consists of nerves arising from
| | | | | | | |
the brain and sacral region of the spinal cord.
| | | | | | | |
What are the target tissues/organs of the ANS? - CORRECT
| | | | | | | | | |
ANSWER✔✔-Cardiac muscle, smooth muscle, adipose and glands. | | | | | |
What are the control centers of the ANS? - CORRECT ANSWER✔✔-
| | | | | | | | | |
Medulla, pons and hypothalamus.
| | |
What division of the nervous system do long reflexes integrate with?
| | | | | | | | | | |
Short reflexes? - CORRECT ANSWER✔✔-Long reflexes: CNS
| | | | | |
Short reflexes: PNS
| |
What are aggregations of cell bodies referred to in the CNS? - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-nuclei
, What are aggregations of cell bodies referred to in the PNS? - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-ganglia
Where are the autonomic motor nuclei specifically located within the
| | | | | | | | | |
gray matter of the spinal cord? - CORRECT ANSWER✔✔-in the anterior
| | | | | | | | | | |
horn, posterior to the cell bodies of the somatic motor neurons.
| | | | | | | | | |
Where are the visceral sensory nuclei specifically located within the gray
| | | | | | | | | |
matter of the spinal cord? - CORRECT ANSWER✔✔-in the posterior
| | | | | | | | | | |
horn, anterior to the cell bodies of the somatic sensory neurons.
| | | | | | | | | |
What are the differences in lengths of the axons (both pre- and
| | | | | | | | | | | |
postganglionic) between the parasympathetic nervous system (PNS) and
| | | | | | |
the sympathetic nervous system (SNS)? - CORRECT ANSWER✔✔-PNS:
| | | | | | | |
Pre-ganglionic: long |
Post-ganglionic: short |
SNS:
Pre-ganglionic: short |
Postganglionic: long |
Why does this difference exist? - CORRECT ANSWER✔✔-because in the
| | | | | | | | | |
PNS the ganglia are distant from the spinal cord and are often close to,
| | | | | | | | | | | | | |
and sometimes within, the organ where the target cell is located.
| | | | | | | | | |
