11 The Autonomic Nervous System

Question 1

What are the adrenergic neurons, and what do they produce?

Answer 1

Adrenergic neurons secrete the neurotransmitter norepinephrine.

Question 2

Decribe in general terms, the function of the parasympathetic nervous system.

Answer 2

The parasympathetic system generally promotes reactions that restore and conserve energy in the body. Rest and Digest. SLUDD: salivation, lacrimation, urination, digestion, defecation.

Question 3

Give 2 reasons why the effects of the activation of the sympathetic divisions are longer lasting and more widespread than those of the parasympathetic division:

Answer 3

Norepinephrine is slowly metabolized after release. And it may enter the bloodstream.

Question 4

The adrenal medulla is stimulated by:

Answer 4

Sympathetic preganglionic neurons.

Question 5

Liver splits glycogen to glucose is a characteristic of what nervous system?

Answer 5

Sympathetic

Question 6

What percentage of the catecholamine hormones released by the adrenal medullae is norepinephrine?

Answer 6

20%

Question 7

The efferent (output) of the ANS has 2 principal divisions:

Answer 7

Sympathetic and parasympathetic

Question 8

Cell bodies of __ preganglionic neurons are located in the grey matter in the 12 thoracic and first 2 or 3 lumbar segments of the spinal cord.

Answer 8

sympathetic

Question 9

Cell bodies of the __ preganglionic neurons are located in brain stem nuclei and in the gray matter in the second through fourth sacral segments of the spinal cord.

Answer 9

parasympathetic