A system of human anatomy, general and special . rgin of the anus, and is usually not more than an inch external surface of the labia is covered with hairs; the innersurface is smoooth, and lined by mucous membrane, which containsa number of sebaceous follicles, and is covered by a thin cuticularepithelium. The use of the labia majora is to favour the extensionof the vulva during parturition; for, in the passage of the head ofthe foetus, the labia are completely unfolded and effaced. The Labia minora, or nympha, are two smaller folds situatedwithin the labia majora. Superiorly they
A system of human anatomy, general and special . rgin of the anus, and is usually not more than an inch external surface of the labia is covered with hairs; the innersurface is smoooth, and lined by mucous membrane, which containsa number of sebaceous follicles, and is covered by a thin cuticularepithelium. The use of the labia majora is to favour the extensionof the vulva during parturition; for, in the passage of the head ofthe foetus, the labia are completely unfolded and effaced. The Labia minora, or nympha, are two smaller folds situatedwithin the labia majora. Superiorly they are divided into two pro-cesses, which surround the glans clitoridis, the superior fold formingthe prreputium clitoridis, and the inferior its frsenulum. Inferiorly,they diminish gradually in size, and are lost on the sides of the open-ing of the vagina. The nymph re consist of mucous membrane,covered by a thin cuticular epithelium. They are provided with anumber of sebaceous follicles, and contain, in their interior, a layerof erectile MAMMARY GLANDS. 5S3 The Clitoris is a small elongated organ situated in front of the ossapubis, and supported by a suspensory ligament. It is formed by asmall body, which is analogous to the corpus cavernosum of thepenis, and, like it, arises from the ramus of the os pubis and ischiumon each side, by two crura. The extremity of the clitoris is calledits glans. It is composed of erectile tissue, enclosed in a dense layerof fibrous membrane, and is susceptible of erection. Like the penis,it is provided with two small muscles, the erectores clitoridis. At about an inch beneath the clitoris is the entrance of the vagina,an elliptical opening, marked by a projecting margin. The entranceto the vagina is closed in the virgin by a membrane of a semilunarform, which is stretched across the opening ; this is the hymen. Some-times the membrane forms a complete septum, and gives rise to greatinconvenience by preventing the escape of the menstrual e
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectanatomy, bookyear1847
