perineum

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perineum

 [per″ĭ-ne´um]
the pelvic floor and associated structures occupying the pelvic outlet, bounded anteriorly by the pubic symphysis, laterally by the ischial tuberosities, and posteriorly by the coccyx. During childbirth the perineum may be torn, resulting in possible damage to the urinary meatus and anal sphincter. To avoid a perineal tear, the obstetrician often cuts the perineum just before delivery and sutures the incision after delivery of the infant and the placenta. This procedure is called an episiotomy. Surgical repair of an episiotomy or of a torn or lacerated perineum is called perineorrhaphy.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

per·i·ne·um

, pl.

per·i·ne·a

(per'i-nē'ŭm, -nē'ă), [TA]
1. Surface area between the thighs extending from the coccyx to the pubis that includes the anus posteriorly and the external genitalia anteriorly.
2. The compartment inferior to the pelvic diaphragm bounded peripherally by the osseofibrous structures comprising the pelvic outlet the surface of which is sense 1.
3. External surface of the central tendon of the perineum, lying between the vulva and the anus in the female and the scrotum and the anus in the male.
[L. fr. G. perineon, perinaion]
Farlex Partner Medical Dictionary © Farlex 2012

perineum

(pĕr′ə-nē′əm)
n. pl. peri·nea (-nē′ə)
1. The portion of the body in the pelvis occupied by urogenital passages and the rectum, bounded in front by the pubic arch, in the back by the coccyx, and laterally by part of the hipbone.
2. The region between the scrotum and the anus in males, and between the posterior vulva junction and the anus in females.

per′i·ne′al (-nē′əl) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

perineum

The mucocutaneous tissue between the posterior scrotum or vagina and the anal sphincter.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

per·i·ne·um

(per'i-nē'ŭm, -ă) [TA]
1. The area between the thighs extending from the coccyx to the pubis and lying below the pelvic diaphragm.
2. The external surface of the central tendon of the perineum, lying between the vulva and the anus in the female and the scrotum and the anus in the male.
[L. fr. G. perineon, perinaion]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

perineum

(per?i-ne'um) [Gr. perinaion]
1. The structures occupying the pelvic outlet and constituting the pelvic floor.
Enlarge picture
PERINEUM
2. The external region between the vulva and anus in a female or between the scrotum and anus in a male. It is made up of skin, muscle, and fasciae. The muscles of the perineum are the anterior portion of the intact levator ani muscle and the transverse perineal muscle. See: illustration; perineal body
Medical Dictionary, © 2009 Farlex and Partners

perineum

That part of the floor of the PELVIS that lies between the tops of the thighs. In the male, the perineum lies between the anus and the scrotum. In the female, it includes the external genitalia.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Perineum

The area between the opening of the vagina and the anus in a woman, or the area between the scrotum and the anus in a man.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
(8) The only two studies we found in Asian women showed that Asian women do not have a shorter perineum than Caucasian women, (9,13) so this belief is not supported by the existing evidence.
"Women get pregnant very quickly after their wedding, after about one year, and the perineum is not very elastic by then." (Midwife No.2)
However, even if the lack of elasticity in the perineum among nulliparous women is a risk factor for third- and fourth-degree tears, (8) no evidence supports the idea that frequent sexual intercourse would soften the perineum and make it less prone to injury.
However, the literature does not support the belief that Asian women have a shorter and less elastic perineum than others.
But the belief that Cambodian women have a shorter perineum seems to be a "myth".
"The midwife does an episiotomy because she cannot wait for the stretching of the perineum." (Obstetrician No.4)
The health professionals referred to the "aesthetic" aspect of the perineum: a perineum cut and sutured is nicer than a sutured perineal tear: