If a scientific opinion has been verified repeatedly, it becomes a
A) model.
B) law.
C) theory.
D) variable.
E) hypothesis.
B) law.
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The portion of the urethra that penetrates the urogenital diaphragm is the
A) membranous urethra. B) penile urethra. C) corpus spongiosum. D) spongy urethra. E) vascular urethra.
A portal system exists between the
a. adrenal cortex and adrenal medulla. b. hypothalamus and anterior pituitary. c. hypothalamus and posterior pituitary. d. large intestine and small intestine. e. large intestine and stomach.
Which of the following surrounds individual muscle fibers?
A) epimysium B) perimysium C) endomysium D) tendon
An intestinal hormone that stimulates mucus secretion by the submucosal duodenal glands and dilation of intestinal capillaries is
A) secretin. B) cholecystokinin. C) vasoactive intestinal peptide (VIP). D) gastric inhibitory peptide (GIP). E) gastrin.