(anatomy) The region between the vulva and anus in women and the scrotum and anus in men.
(anatomy) In mammals, the serous membrane lining the cavity of the abdomen and that is folded over the viscera.
The region which is included within the outlet of the pelvis, and is traversed by the urinogenital canal and the rectum.
(zoology) In animals, the membrane lining the coelom cavity.
the general region between the anus and the genital organs
The smooth serous membrane which lines the cavity of the abdomen, or the whole body cavity when there is no diaphragm, and, turning back, surrounds the viscera, forming a closed, or nearly closed, sac.
The perineum in humans is the space between the anus and scrotum in the male, or frenulum labiorum pudendi in the female. The perineum is the region of the body between the pubic symphysis (pubic arch) and the coccyx (tail bone), including the perineal body and surrounding structures.
a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera
The peritoneum is the serous membrane forming the lining of the abdominal cavity or coelom in amniotes and some invertebrates, such as annelids. It covers most of the intra-abdominal (or coelomic) organs, and is composed of a layer of mesothelium supported by a thin layer of connective tissue.