Question

which of the following is correct about the autonomic nervous system (ans)? multiple choice the ans is part of both the cns and the pns. ans functions are involuntary. ans motor neurons innervate cardiac muscle fibers, smooth muscle fibers, and glands. ans motor pathways always include two neurons. all of the choices are correct.

Explanation:

1. Analyze each option:

• “The ANS is part of both the CNS and the PNS”: The ANS is part of the peripheral nervous system (PNS), not the central nervous system (CNS), so this is incorrect.
• “ANS functions are involuntary”: The autonomic nervous system controls involuntary functions like heart rate, digestion, etc., so this is correct.
• “ANS motor neurons innervate cardiac muscle fibers, smooth muscle fibers, and glands”: ANS motor neurons do innervate these structures, so this is correct.
• “ANS motor pathways always include two neurons”: ANS motor pathways have a preganglionic and a postganglionic neuron, so this is correct.
• Since the last three options are correct, “All of the choices are correct” is the right answer.

Answer:

E. All of the choices are correct.