Which of these structures contributes the greatest percentage to semen?
A) bulbourethral glands
B) prostate
C) corpus spongiosum
D) seminal vesicles
E) testes
Ans: D) seminal vesicles
The seminal vesicles contribute the greatest percentage of secretions to semen, approximately 60%.
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Sympathetic and parasympathetic fibers that innervate the heart pass through the
A) celiac plexus. B) hypogastric plexus. C) cardiac plexus. D) sphenopalatine ganglia. E) otic ganglia.
The term ovulation means:
A) development of a malignant tumor of the ovary B) formation of eggs C) fertilization of an egg by a sperm D) release of an egg by the ovary
Which of the following is a vasoconstrictor released by platelets that aids in hemostasis?
A. Platelet-derived growth factor B. Histamine C. Factor XII D. Plasmin E. Serotonin
Which of the following is not an important function of calcium ions in skeletal muscle activity?
A. Exposure of the active sites on G actin B. Release of acetylcholine from the presynaptic terminal C. Depolarization of the sarcolemma D. All of these are important functions of calcium ions in skeletal muscle contraction.