When you feel threatened, the

neurotransmitter, ___, is released from ___
neurons and your response is to fight or flee.



a. acetylcholine--sympathetic
b. acetylcholine--parasympathetic
c. norepinephrine--sympathetic
d. serotonin--sympathetic
e. serotonin--parasympathetic


C

Biology & Microbiology

You might also like to view...

Animal viruses are divided into a number of families whose names end in

A. -virus. B. -viridae. C. -viscous. D. -eieio.

Biology & Microbiology

Which ponds contained both cichlids and killifish as predators?

a. primero, segundo, and quarto b. segundo, quarto, and quinto c. tercero and septimo d. quinto and sexto e. none of the above

Biology & Microbiology

The ________ is a group of plant and animal species that inhabits a given area

Fill in the blank(s) with correct word

Biology & Microbiology

Cutting down large areas of tropical rain forest increases atmospheric CO2 in two ways. One is that rotting and burning trees directly add CO2 to the atmosphere. What is the other reason CO2 increases?

Biology & Microbiology