Sympathetic Nervous System Anatomy
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Questions and Answers

Where do many of the preganglionic neurons synapse?

  • In the parasympathetic ganglia
  • In the adrenal glands
  • In the spinal cord
  • In the sympathetic chain with the postganglionic neurons (correct)

What is the neurotransmitter released by the preganglionic neurons?

  • Acetylcholine (Ach) (correct)
  • Dopamine
  • Epinephrine (E)
  • Norepinephrine (NE)

What is the difference between epinephrine (E) and norepinephrine (NE)?

  • One more hydroxyl group in epinephrine than norepinephrine
  • Epinephrine is released by preganglionic neurons, while norepinephrine is released by postganglionic neurons
  • Norepinephrine has a catechol ring, while epinephrine does not
  • One more methyl group in epinephrine than norepinephrine (correct)

Where do postganglionic neurons pass from after synapsing?

<p>Directly into the organ innervated (B)</p> Signup and view all the answers

What are the two types of sympathetic motor neurons between the spinal cord and the organ innervated?

<p>Preganglionic and postganglionic neurons (D)</p> Signup and view all the answers

What is the primary neurotransmitter released by the adrenal medulla into the blood?

<p>Epinephrine (E) (B)</p> Signup and view all the answers

In response to which of the following does the sympathetic nervous system secrete norepinephrine (NE) directly into specific effector organs?

<p>Pain (B)</p> Signup and view all the answers

What triggers the simultaneous secretion of epinephrine (E) and norepinephrine (NE) by the adrenal medulla into the blood?

<p>Oxygen lack (D)</p> Signup and view all the answers

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