18)neurotransmitters acting through a ionotropic mechanism a)open ion channels p

Question

18)neurotransmitters acting through a ionotropic mechanism

a)open ion channels present in the same molecules that has the receptors site

b)requires an enzyme in the cytosol of the post synaptic cell

c)act through second messengers

d)requires a G protein

19) what is the role acetylcholinesterase?

a)stimulate the production of epinephrine

b)act as a neurotransmitter

c)destroy acetylcholine a brief period after its release by the axon terminals

d)amplify or enhance the effect of acetylchline (ACh)

20)which is a uniquely sympathetic function?

a)regulation of sweat glands

b)regulation of digestive organs

c)regulation of cardiac rate

d)regulation of respiratory rate

Explanation / Answer

18. a) open ion channels present in the same molecules that has the receptors

19. c) destroy acetylcholine a brief period after its release by the axon terminals

20. a) regulation of sweat glands

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