Autonomic Nervous System Overview

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What is the main function of the sympathetic nervous system?

Prepare organs for 'fight or flight' (correct)

Regulate breathing only

Initiate digestive activity

Control heart rate

Where are the cell bodies of sensory neurons located in the spinal cord?

Dorsal root ganglia (correct)

Gray matter

Brain

White matter

What is the function of white matter in the spinal cord?

Regulates heart rate

Contains neuron cell bodies

Receives sensory input

Sends axons to the brain from the gray matter (correct)

Which part of the nervous system contains a cluster of neuron cell bodies outside the CNS?

Ganglion Signup and view all the answers

Which area of the spinal cord communicates with all sense organs and muscles except those of the head?

Gray matter Signup and view all the answers

What neurotransmitters are involved in the functioning of the sympathetic nervous system?

Acetylcholine and epinephrine Signup and view all the answers

Which of the following is a key difference between the sympathetic and parasympathetic nervous systems?

All of the above. Signup and view all the answers

What is the primary function of the parasympathetic nervous system?

To decrease heart rate, increase digestive activity, and conserve energy. Signup and view all the answers

Where are the parasympathetic ganglia located, in relation to the spinal cord?

The parasympathetic ganglia are not arranged in a chain near the spinal cord, but are located close to the internal organs they innervate. Signup and view all the answers

What is the role of the dorsal root ganglia in the autonomic nervous system?

The dorsal root ganglia do not play a role in the autonomic nervous system, as they are part of the somatic nervous system. Signup and view all the answers

Which of the following statements about the neurotransmitters used in the autonomic nervous system is correct?

While most sympathetic postganglionic neurons release norepinephrine, a few, such as those innervating the sweat glands, release acetylcholine. Signup and view all the answers

Where are the cell bodies of the preganglionic neurons in the autonomic nervous system located?

The cell bodies of the preganglionic neurons are located in the gray matter of the spinal cord. Signup and view all the answers

Which part of the nervous system contains cell bodies that are located both within the brain/spinal cord and in clusters along the sides of the spinal cord?

Autonomic nervous system Signup and view all the answers

Which type of nervous system is responsible for conveying messages from the sense organs to the central nervous system and from the central nervous system to the muscles?

Somatic nervous system Signup and view all the answers

Which anatomical term refers to the direction toward the back, away from the ventral (stomach) side?

Dorsal Signup and view all the answers

Which type of nervous system is responsible for regulating the heart, intestines, and other internal organs?

Autonomic nervous system Signup and view all the answers

Where are the dorsal root ganglia located in the nervous system?

Along the sides of the spinal cord Signup and view all the answers

Autonomic Nervous System Overview

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