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Chapter 1: Q. 17 (page 7)

Where are parasympathetic preganglionic cell bodies located?

a. cerebellum

b. brainstem

c. dorsal root ganglia

d. skin

Short Answer

Expert verified

Option b is the correct answer.

Step by step solution

01

Introduction

The parasympathetic nerve system enables "rest and digestion" in the body. Acetylcholine is released by parasympathetic neurons. The brainstem and sacral spinal cord are home to the cell bodies of parasympathetic neurons. The parasympathetic nervous system is activated to enhance digestion and blood flow to the skin while lowering heart rate and blood pressure.

02

The explanation for the correct answer

Cell bodies for parasympathetic preganglionic neurons are found in the brainstem and sacral (downward facing) spinal cord.

03

The explanation for incorrect options

The rest of the options are irrelevant to the question.

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Most popular questions from this chapter

Which of the following statements is false?

a. The parasympathetic pathway is responsible for relaxing the body, while the sympathetic pathway is responsible for preparing for an emergency.

b. Most preganglionic neurons in the sympathetic pathway originate in the spinal cord.

c. The slowing of the heartbeat is a parasympathetic response.

d. Parasympathetic neurons are responsible for releasing norepinephrine on the target organ, while sympathetic neurons are responsible for releasing acetylcholine.

What movement(s) occur(s) at the scapulae when you shrug your shoulders?

Describe the structure of the kidney.

The forearm consists of the:

  1. radius and ulna
  2. radius and humerus
  3. ulna and humerus
  4. humerus and carpus

For a neuron to fire an action potential, its membrane must reach ________.

a. hyperpolarization

b. the threshold of excitation

c. the refractory period

d. inhibitory postsynaptic potential
See all solutions

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