The "runner's high" and the euphoria sometimes associated with childbirth, painful initiation rites, and sports parachuting are due to the release of
a. acetylcholine.
b. endorphins.
c. neurilemma.
d. epinephrine.
B
Psychology
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All of an embryo's major organs and body parts have formed by about how many weeks after conception?
A) 4 B) 8 C) 16 D) 32
Psychology
Overall, the relationship between attitudes and behavior is ________
A) based on personality attributes B) reliable, with some exceptions C) almost non-existent D) based on gender E) only found in contrived experiments
Psychology
Genes involved in __________ and __________ signaling are associated with human aggression.
A. serotonin; dopamine B. acetylcholine; epinephrine C. serotonin; epinephrine D. acetylcholine; dopamine
Psychology
Most vivid dreams occur during __________.
Fill in the blank(s) with the appropriate word.
Psychology