Endorphin, short for endogenous morphine, is a neurotransmitter involved in ____.
a. schizophrenia
b. Parkinsons disease
c. the perception of pain
d. muscle paralysis
Question 2
John reports to his doctor that he has been experiencing changes in his appetite. This suggests that John is experiencing fluctuations in which neurotransmitter?
a. acetylcholine
b. histamine
c. glutamate
d. serotonin