Question

What is a neuromodulator?a. A neurocrine molecule that diffuses across a narrow extracellular space to a target cell and has a rapid effectb. A neurocrine molecule that acts slowly in an autocrine or paracrine mannerc. A neurocrine molecule that is transported in the bloodstream.d. A hormone that is transported in the bloodstream

Answer 1

b. A neurocrine molecule that acts slowly in an autocrine or paracrine manner

Step-by-step explanation:

Neuromodulators are endogenous substances, products of metabolism, If the molecule acts more slowly as if it were an autocrine or paracrine signal is a neuromodulator, which is released by nerve terminals, producing an alternation in the way the nerves communicate with each other and, consequently, the level of general brain activity.