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Glossary
Pages 495-504

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From page 495...
... Androgen Generic term for an agent, usually a hormone (e.g., testosterone) , that stimulates activity of the accessory male sex organs, encouraging devel opment of male sex charcteristics, or prevents changes in the latter that follow castration.
From page 496...
... Chancroid A sexually transmitted disease caused by the Hemophilus ducreyi bacterium and characterized by a soft sore on the genitals which becomes painful and discharges pus. Chlamydia trachomatis A microorganism that can cause vaginitis, urethritis, cervitis, pelvic inflammatory disease, and lymphogranuloma venereum (LGV)
From page 497...
... During the second half of the cycle, if con ception does not occur, the corpus luteum degenerates, leaving visible scars called the corpora albicans. If pregnancy does occur, the corpus luteum persists and functions through the first half of the pregnancy.
From page 498...
... Epididymis A coiled tubular structure where sperm cells mature and are nour ished, and which connects the testes to the vas deferens. Estrogen The primary female hormones; any natural or artificial substance that induces estrogenic activity, more specifically, the hormones estradiol and estrone produced by the ovary.
From page 499...
... Elements of the immune system include white blood cells and the cells, immunoglobin proteins and hormones they produce, such as macrophages, antibodies and lymphokines. Immunocontraceptive methods All contraceptive methods based on interfer ence of some step of the reproductive process by products of an immune reaction, be it antibodies or cells.
From page 500...
... Anterior pituitary hormone which causes a follicle to release a ripened ovum and become a corpus luteum. In the male it stimulates testosterone production and the production of sperm cells.
From page 501...
... years surround ing a woman's last menstrual period; more recently it is being defined as beginning more than a decade before frank menopause, in the mid-thirties and early forties, coincident with the initiation of ovarian decline. Periodic abstinence methods Contraceptive methods that rely on timing of intercourse to avoid the ovulatory phase of a woman's menstrual cycle; also called fertility awareness or natural family planning.
From page 502...
... Oral contraceptives diminish the prostaglandins released by the endometrial lining, decreasing menstrual cramps in users. Prostate A pale, firm, partly muscular, partly glandular body that surrounds the base of the male urethra in man and other mammals and discharges its viscid opalescent secretion through ducts opening into the floor of the urethra.
From page 503...
... Vagina The 3- to 5-inch long muscular tube leading from the external genitals of the female to the uterus. The external opening, called the introitus, may be diminished by a membrane called hymen.
From page 504...
... Vasectomy A surgical procedure in which segments of the vas deferens are removed and the ends tied to prevent passage of sperm. Vasectomy should be regarded as permanent, although reversal is possible in some cases.


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