Which chemicals are described as both neurotransmitters and hormones?
a. estrogen and progesterone
b. insulin and melatonin
c. norepinephrine and epinephrine
d. ACTH and cortical steroids
e. oxytocin and testosterone
c
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In an experiment by ankle Keys, 36 male volunteers cut their food intake and half for a period of six months. In response to this semi-starvation, the volunteers
A) did not stabilize their way even though they were taking in half their previous calories B) stabilized at 25% of their normal weight, while taking in half their previous calories. C) reduced their energy expenditure, and their body weight stabilized at about 25% below their starting weights. D) increased their energy expenditure in their basal metabolic rate.
The Papez circuit starts in WHICH of the following brain structures?
a) cerebellum b) hippocampus c) limbic system d) the cortex