The most commonly used oral contraceptives contain
A) synthetic androgen. B) gonadotropins.
C) FSH and LH. D) synthetic estrogen and progesterone.
D
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Symptoms of Addison's disease include all of the following except ________
A) High blood pressure B) Excessive skin pigmentation C) Weight loss D) Low blood pressure
Current research indicates that stomach cancer may originate from ________ cells that enter the stomach to repair damage to the stomach lining.
A. phagocytic B. stem C. bone marrow D. muscle
Arteriolar smooth muscle normally displays a state of partial constriction known as _______
Fill in the blank(s) with correct word
Biological half-life is the time required for
A. half of an ionic compound to ionize. B. half of a radioactive material to be eliminated from the body. C. radiation exposure that is lethal for half of a biological population. D. radioactivity levels of organic compounds to stabilize at one-half their original value.