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Autonomic Nervous System

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Questions and Answers

What is the characteristic of the preganglionic fibers of the sympathetic nervous system?

Short preganglionic fibers (correct)

Preganglionic fibers that originate in the brain

Long preganglionic fibers

Preganglionic fibers that originate in the spinal cord

What is the main location of the autonomic ganglia in the sympathetic nervous system?

In the brain

Close to the effector organ

On either side of the vertebral column (correct)

In the spinal cord

What is the characteristic of the postganglionic fibers of the parasympathetic nervous system?

Long postganglionic fibers

Postganglionic fibers that originate in the spinal cord

Postganglionic fibers that originate in the brain

Short postganglionic fibers (correct)

What is the origin of the cranial outflow of the parasympathetic nervous system?

Certain cranial nuclei Signup and view all the answers

What is the characteristic of the autonomic nervous system in relation to ganglia?

Ganglia are present in the autonomic nervous system Signup and view all the answers

What is the origin of the sacral outflow of the parasympathetic nervous system?

Cells in the 2nd, 3rd and 4th sacral segments of the spinal cord Signup and view all the answers

What is the characteristic of the sympathetic nervous system in relation to the spinal cord?

Preganglionic fibers originate in the lateral horn cells of all thoracic and upper three lumbar segments of the spinal cord Signup and view all the answers

What is the characteristic of the autonomic nervous system in relation to effector organs?

The autonomic nervous system controls smooth muscles, cardiac muscles, and exocrine glands Signup and view all the answers

What is the characteristic of the parasympathetic nervous system in relation to preganglionic fibers?

Preganglionic fibers are long Signup and view all the answers

What is the note-worthy aspect of the supra renal medulla?

It is a modified sympathetic ganglion Signup and view all the answers