After about eight weeks of conception, male fetuses are exposed to higher levels of ______, resulting in a more "masculinized" brain.
A. kisspeptin
B. estrogen
C. melatonin
D. testosterone
Answer: D
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A psychologically resilient person is able to
Fill in the blank(s) with the appropriate word(s)
Rapid physical changes during puberty have what effect on the adolescent's need for sleep?
a. increases the adolescent's need for sleep b. slightly decreases the adolescent's need for sleep c. significantly decreases the adolescent's need for sleep d. has no effect on the adolescent's need for sleep
During a study session, your friend looks up from his notes to give you a confused look. "I wrote the word ‘reuptake' in my notes but don't remember what it means." You nod calmly, explaining to your friend that reuptake refers to a process in which
A. more neurotransmitters are released into the synapse. B. an enzyme at the synapse breaks down neurotransmitters. C. neurotransmitters are transported back into their presynaptic areas. D. neurotransmitters continue to stimulate receptors indefinitely.
The __________ stage of labor is the shortest, usually lasting 10 to 15 minutes
a. first c. third b. second d. fourth