The hypophyseal portal veins represent a specialized portal circulation system that transports hormones from:
a. The anterior pituitary to the thyroid gland
b. The hypothalamus to the anterior pituitary
c. The hypothalamus to the posterior pituitary
d. The posterior pituitary to the kidney
e. The posterior pituitary to the mammary glands
Ans: b. The hypothalamus to the anterior pituitary
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In resting individuals, energy use is proportional to
A) amount of lipids in the diet. B) carbon dioxide produced during cellular respiration. C) total caloric intake. D) weight. E) oxygen consumption.
The beginning of labor involves increased production of ________ from the fetal hypothalamus, resulting in secretion of ________ by the placenta.
A. prostaglandin; prolactin B. prolactin; GnRH C. oxytocin; prostaglandins D. prolactin; oxytocin E. GnRH; prolactin
Which of the following factors keeps the alveoli expanded?
A. Negative intra-alveolar pressure B. Alveolar pressure being equal to atmospheric pressure C. A reduction in surfactant D. A pneumothorax E. Negative pleural pressure
The male hormone(s) secreted by the testes is (are)
A. progesterone. B. gonadotropin. C. testosterone. D. steroid Y. E. both testosterone and gonadotropin.