Which descriptions are true of neurotransmitters?
I.produced by the endocrine system
II.transported in the bloodstream
III.interact with cells in their direct pathway
IV.act within 1 second or less after release
V.effects are of short duration

Question

Quizplus · Accepted Answer

Neurotransmitters are chemical messengers that interact with cells directly in their pathway (III), act very quickly, often within 1 second or less after their release (IV), and their effects are typically of short duration (V). They are not produced by the endocrine system (I) or transported in the bloodstream (II); those are characteristics of hormones.

Which Descriptions Are True of Neurotransmitters