Cypress College » Biology » Biology 241 - Accelerated General Human Physiology » Summer 2021

Question #1

What is the best definition of a hormone?

A. chemical substance that affects the activities of a cell

B. chemical that travels in the bloodstream and affects the activities of a cell

C. chemical that travels in the bloodstream

D. chemical secreted by a gland

Question #2

Which hormones use second messenger systems?

A. thyroid hormones

B. steroid hormones

C. epinephrine

D. epinephrine, thyroid hormones, and steroid hormones

Question #3

Which of the following releases corticotropin-releasing hormone (CRH)?

A. posterior pituitary

B. hypothalamus

C. anterior pituitary

D. adrenal cortex

Question #4

Hormone activities are regulated by homeostatic negative feedback loops.

A. TRUE

B. FALSE

Question #5

The chemical signal released into the synaptic cleft and binds to the postsynaptic membrane protein is called:

A. hormone

B. neurotransmitter

C. neurohormone

D. dendrite