Control many of the body's functions.

a: villi (it is not this)
b: hormones
c; endorphins (group of hormones, so i was confused)

How does a bone marrow transplant treat sickle cell disease?

Claustrophobia is an example of a(n)

Design a questionnaire to indicate the level of a person’s wellness. have a friend or family member complete the questionnaire. make a prediction about that person’s wellness and justify your prediction using two or more complete sentences.