Q: Which equation correctly represents the pathway of a somatic motor neuron?

$$\text{CNS} \rightarrow \text{Somatic Motor Neuron} \rightarrow \text{Skeletal Muscle}$$

Q: Which equation best represents the pathway for sympathetic innervation of an effector organ?

$$\text{CNS} \rightarrow \text{Preganglionic Neuron} \rightarrow \text{Ganglion} \rightarrow \text{Postganglionic Neuron} \rightarrow \text{Effector}$$

Question 1

Which of the following best describes the function of the somatic nervous system?

Accepted Answer

It allows you to consciously move your muscles voluntarily.

Question 2

Which neurotransmitter is released by all somatic motor neurons?

Accepted Answer

Acetylcholine (ACh)

Question 3

A patient is given atropine before surgery. What is the primary effect of this drug?

Accepted Answer

It blocks muscarinic receptors, inhibiting parasympathetic activity.

Question 4

Which of the following is TRUE about the autonomic nervous system (ANS)?

Accepted Answer

It consists of sympathetic and parasympathetic divisions.

Question 5

Which equation correctly represents the pathway of a somatic motor neuron?

Accepted Answer

$$	ext{CNS} ightarrow 	ext{Somatic Motor Neuron} ightarrow 	ext{Skeletal Muscle}$$

Question 6

Which receptor type is found on all postganglionic neurons in the autonomic nervous system?

Accepted Answer

Nicotinic

Question 7

A drug that blocks beta-adrenergic receptors would most likely affect which of the following?

Accepted Answer

Sympathetic stimulation of the heart

Question 8

Which of the following statements about neurotransmitter release in the ANS is correct?

Accepted Answer

Sympathetic postganglionic neurons usually release norepinephrine.

Question 9

Which of the following is a correct description of the effect of acetylcholine (ACh) on muscarinic receptors?

Accepted Answer

ACh binding to muscarinic receptors can cause either excitation or inhibition depending on the target organ.

Question 10

Which equation best represents the pathway for sympathetic innervation of an effector organ?

Accepted Answer

$$	ext{CNS} ightarrow 	ext{Preganglionic Neuron} ightarrow 	ext{Ganglion} ightarrow 	ext{Postganglionic Neuron} ightarrow 	ext{Effector}$$

Question 11

Which of the following is NOT a function of the sympathetic nervous system?

Accepted Answer

Stimulating digestive activity

Question 12

Which type of receptor is responsible for the effects of norepinephrine on target organs in the sympathetic nervous system?

Accepted Answer

Adrenergic

Question 13

A patient is experiencing increased salivation and decreased heart rate. Which division of the ANS is most active?

Accepted Answer

Parasympathetic nervous system

Question 14

Which of the following best describes the effect of atropine on the body?

Accepted Answer

It blocks muscarinic receptors, reducing salivation and increasing heart rate.

Question 15

Which of the following is a correct statement about the neurotransmitters used in the ANS?

Accepted Answer

Acetylcholine is released by all preganglionic neurons.

Question 16

Which of the following is TRUE regarding the effect of acetylcholine on nicotinic receptors?

Accepted Answer

It always causes excitation.

Question 17

Which equation represents the effect of sympathetic stimulation on heart rate?

Accepted Answer

$$	ext{Sympathetic Stimulation} ightarrow 	ext{Norepinephrine Release} ightarrow 	ext{Beta-1 Receptor Activation} ightarrow 	ext{Increased Heart Rate}$$

Question 18

Which of the following is a correct statement about the organization of the autonomic nervous system?

Accepted Answer

Postganglionic neurons innervate target organs such as smooth muscle and glands.

Question 19

Which of the following best describes the effect of alpha-adrenergic receptor activation?

Accepted Answer

It can cause either excitation or inhibition depending on the subtype and target organ.

Autonomic Nervous System: Structure, Function, and Neurotransmitters

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