EMBRYOLOGY
NERVOUS SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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acetylcholine only
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acetylcholine and norepinephrine
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norepinephrine only
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seratonin
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Detailed explanation-1: -Epinephrine. Epinephrine (also called adrenaline) and norepinephrine (see below) are responsible for your body’s so-called “fight-or-flight response” to fear and stress.
Detailed explanation-2: -Acetylcholine is the main neurotransmitter of the “rest-and-digest” or parasympathetic nervous system. As a central messenger of this response, acetylcholine counteracts “fight-or-flight” tendencies and drives cholinergic activity in the body.
Detailed explanation-3: -Noradrenaline is another neurotransmitter in the human body, which is regularly associated with the body’s fight or flight response to stress.
Detailed explanation-4: -For the most part, sympathetic ganglion cells release norepinephrine onto their targets (a notable exception is the cholinergic sympathetic innervation of sweat glands), whereas parasympathetic ganglion cells typically release acetylcholine.