Serotonin:
A. acts as a neuromodulator.
B. is a catecholamine neurotransmitter.
C. is a neuropeptide.
D. has an inhibitory effect on pathways that are involved in the control of muscles.
E. has an excitatory effect on pathways that mediate sensations.
A
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During the proliferative phase of the menstrual cycle, the
A) corpus luteum is forming. B) functional zone of the endometrium is restored. C) fertilized ovum implants. D) old functional layer is sloughed off. E) endometrium finalizes the preparation for implantation.
726) The endometrium is thickest during the ________ phase of the uterine cycle.
Fill in the blank(s) with the appropriate word(s).
What is the primary energy source for ejaculated sperm?
a. fructose b. glucose c. galactose d. lactic acid e. fatty acids
The reason that certain odors can initiate behavioral and emotional reactions is because
A. there are widespread olfactory associations within the hypothalamus and limbic system. B. the sense of olfaction occurs immediately at the olfactory epithelium. C. olfactory sensations are interpreted at the prefrontal cortex. D. the olfactory pathway is connected directly to the occipital lobe. E. the olfactory pathway is connected directly to the medulla oblongata.