Abstract
THE THERMOREGULATORY function of the mammalian scrotum has been demonstrated by Moore and Quick (i), Phillips and McKensie (2) and others and it JJL. has long been known that if the testes are experimentally removed from their normal scrotal environment and placed in the abdominal cavity, marked degeneration of the germinal epithelium occurs (3,4). Phillips and Andrews (5) reported that in the ram, bull and boar the scrotum acquires its thermo-regulatory ability as the testes begin the production of spermatozoa. Hamilton (6) was able to bring about marked scrotal development of the immature rat by the injection of testosterone acetate. Wells (7) concluded that the ascent of the testes of the adult ground squirrel to the abdominal cavity during the nonbreeding season was not due primarily to scrotal failure and found that testicular regression was paralleled by decreased male hormone production and decreased weight of the scrotal sac.
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