Which of the following is a true statement regarding the neurotransmitters of the ANS? Check all that apply. Check All That Apply All preganglionic neurons of the ANS are cholinergic. All preganglionic neurons of the ANS are cholinergic. All postganglionic neurons of the ANS are adrenergic. All postganglionic neurons of the ANS are adrenergic. All postganglionic neurons of the ANS have cholinergic receptors. All postganglionic neurons of the ANS have cholinergic receptors. Postganglionic sympathetic neurons release norepinephrine to the heart muscle cells. Postganglionic sympathetic neurons release norepinephrine to the heart muscle cells. Some ANS neurons use dopamine as their neurotransmitter.

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Answer:

All preganglionic neurons of the ANS are cholinergic.

All postganglionic neurons of the ANS have cholinergic receptors

Postganglionic sympathetic neurons release norepinephrine to the heart muscle cells

Some ANS neurons use dopamine as their neurotransmitter

Explanation:

Autonomic nervous system (ANS) consists of:

  • sympathetic nervous system -responsible for the "fight and flight" reactions (stressful situations but also for maintaining homeostasis). Short preganglionic neurons release acetylcholine which binds to its receptors on the postganglionic cell. Postganglionic neurons release norepinephrine, epinephrine or dopamine (in kidneys).
  • parasympathetic nervous system -opposite to sympathetic system, responsible for "rest and digest" reactions (body activities at rest). Long preganglionic neurons release acetylcholine which binds to its receptors on the postganglionic cell. Postganglionic neurons release acetylcholine.
  • enteric nervous system-controls digestion

Autonomic nervous system(ANS)  is a division under  the peripheral nervous

system which is responsible for the functioning of muscles and glands.

Their properties include:

  • All preganglionic neurons of the ANS are cholinergic.
  • All postganglionic neurons of the ANS have cholinergic receptors
  • Postganglionic sympathetic neurons release norepinephrine to the heart muscle cells
  • Some ANS neurons use dopamine as their neurotransmitter

The autonomic nervous system have preganglionic neurons of the ANS are

cholinergic and cholinergic receptors which they bind to.

The Postganglionic sympathetic neurons of the ANS release

norepinephrine to the heart muscle cells while some use dopamine as a

neurotransmitter.

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