Function
Onuf’s nucleus is the origin of innervation for the striated muscles of the rectum and urethral sphincter. The neurons of Onuf’s nucleus are responsible for controlling external sphincter muscles of the anus and urethra in humans. Onufrowicz also proposed that Onuf’s nucleus controlled the ischiocavernosus and bulbocavernosus muscles which function in penile erection and ejaculation in males. The dorsomedial subnucleus innervates the rectal striated sphincter and the ventrolateral subgroup connects to the urethral striated sphincter.
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Famous quotes containing the word function:
“Uses are always much broader than functions, and usually far less contentious. The word function carries overtones of purpose and propriety, of concern with why something was developed rather than with how it has actually been found useful. The function of automobiles is to transport people and objects, but they are used for a variety of other purposes—as homes, offices, bedrooms, henhouses, jetties, breakwaters, even offensive weapons.”
—Frank Smith (b. 1928)
“Morality and its victim, the mother—what a terrible picture! Is there indeed anything more terrible, more criminal, than our glorified sacred function of motherhood?”
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“Every boy was supposed to come into the world equipped with a father whose prime function was to be our father and show us how to be men. He can escape us, but we can never escape him. Present or absent, dead or alive, real or imagined, our father is the main man in our masculinity.”
—Frank Pittman (20th century)