The optimal "window of opportunity" to conceive a child is ________
A) a few days before ovulation to a few days after
B) a few days before ovulation to less than a day after
C) a few days before ovulation
D) less than a day before ovulation to less than a day after
E) a few days after ovulation
B
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In a tissue type that undergoes a relatively great deal of mechanical stress, like the tissue that lines the intestine, you would expect to see an abundance of ________ between the individual cells of the tissue.
A) gap junctions B) desmosomes C) focal adhesions D) tight junctions E) All are abundant in tissues resisting stress.
Stomach cells secrete gastrin which functions to
A. increase the secretion by the gastric glands. B. change pepsin into pepsinogen. C. stimulate contraction the stomach. D. inhibit the production of hydrochloric acid.
The secondary curves of the vertebral column are the
A) cervical and lumbar curvatures. B) thoracic and sacral curvatures. C) lumbar and sacral curvatures. D) cervical and thoracic curvatures.
Cholinergic fibers use ________ as the neurotransmitter.
A. dopamine B. serotonin C. norepinephrine D. acetylcholine