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Perineum
The perineum (: perineums or perinea) in placentalia, placental mammals is the space between the anus and the genitals. The human perineum is between the anus and scrotum in the male or between the anus and vulva 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. The perineal raphe is visible and pronounced to varying degrees. Etymology The word entered English from late Latin via Greek language, Greek περίναιος ~ περίνεος ''perinaios, perineos'', itself from περίνεος, περίνεοι 'male genitals' and earlier περίς ''perís'' 'penis' through influence from πηρίς ''pērís'' 'scrotum'. The term was originally understood as a purely male body-part with the perineal raphe seen as a continuation of the scrotal septum since Virilization, masculinization causes the development of a large anogenital distance in men, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Anus
In humans, the anus (: anuses or ani; from Latin ''ānus'', "ring", "circle") is the external opening of the rectum located inside the intergluteal cleft. Two sphincters control the exit of Human feces, feces from the body during an act of defecation, which is the primary function of the anus. These are the internal anal sphincter and the external anal sphincter, which are circular muscles that normally maintain constriction of the orifice and which relax as required by normal physiological functioning. The inner sphincter is involuntary and the outer is voluntary. Above the anus is the perineum, which is also located beneath the vulva or scrotum. In part owing to its exposure to feces, a number of medical conditions may affect the anus, such as hemorrhoids. The anus is the site of potential infections and other conditions, including cancer (see anal cancer). With anal sex, the anus can play a role in Human sexuality, sexuality. Attitudes toward anal sex vary, and it is illeg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulva
In mammals, the vulva (: vulvas or vulvae) comprises mostly external, visible structures of the female sex organ, genitalia leading into the interior of the female reproductive tract. For humans, it includes the mons pubis, labia majora, labia minora, clitoris, vulval vestibule, vestibule, urinary meatus, vaginal introitus, hymen, and openings of the vestibular glands (Bartholin's gland, Bartholin's and Skene's gland, Skene's). The folds of the outer and inner labia provide a double layer of protection for the vagina (which leads to the uterus). Pelvic floor muscles support the structures of the vulva. Other muscles of the urogenital triangle also give support. Blood supply to the vulva comes from the three pudendal arteries. The internal pudendal veins give drainage. Lymphatic vessel#Afferent vessels, Afferent lymph vessels carry lymph away from the vulva to the inguinal lymph nodes. The nerves that supply the vulva are the pudendal nerve, perineal nerve, ilioinguinal nerve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perineal Nerve
The perineal nerve is a nerve of the pelvis. It arises from the pudendal nerve in the pudendal canal. It gives superficial branches to the skin, and a deep branch to muscles. It supplies the skin and muscles of the perineum. Its latency is tested with electrodes. Structure The perineal nerve is a branch of the pudendal nerve. It lies below the internal pudendal artery. It accompanies the perineal artery. It passes through the pudendal canal for around 2 or 3 cm. Whilst still in the canal, it divides into superficial branches and a deep branch. The superficial branches of the perineal nerve become the posterior scrotal nerves in men,Essential Clinical Anatomy. K.L. Moore & A.M. Agur. Lippincott, 2 ed. 2002. Page 263 and the posterior labial nerves in women. The deep branch of the perineal nerve (also known as the "muscular" branch) travels to the muscles of the perineum. Both of these are superficial to the dorsal nerve of the penis or the dorsal nerve of the clitoris. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelvic Diaphragm
The pelvic floor or pelvic diaphragm is an anatomical location in the human body which has an important role in urinary and anal continence, sexual function, and support of the pelvic organs. The pelvic floor includes muscles, both skeletal and smooth, ligaments, and fascia and separates between the pelvic cavity from above, and the perineum from below. It is formed by the levator ani muscle and coccygeus muscle, and associated connective tissue. The pelvic floor has two hiatuses (gaps): (anteriorly) the urogenital hiatus through which urethra and vagina pass, and (posteriorly) the rectal hiatus through which the anal canal passes. Structure Definition Some sources do not consider "pelvic floor" and "pelvic diaphragm" to be identical, with the "diaphragm" consisting of only the levator ani and coccygeus, while the "floor" also includes the perineal membrane and deep perineal pouch. However, other sources include the fascia as part of the diaphragm. In practice, the two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Nerve Of The Clitoris
The dorsal nerve of the clitoris is a nerve in females that branches off the pudendal nerve to innervate the clitoris. The nerve is important for female sexual pleasure, and it may play a role in clitoral erections. It travels from below the inferior pubic ramus to the suspensory ligament of the clitoris. At its thickest, the DNC is in diameter, visible to the naked eye during dissection. The DNC splits into two nerve branches on either side of the midline, closely following the crura of the clitoris. Some surgeries—for example, sling surgeries to treat female urinary incontinence—can damage the DNC, causing a loss of sensation in the clitoris. Understanding the nerve is important for urologists and gynecologists who may operate on organs near the DNC. The dorsal nerve of the clitoris is analogous to the dorsal nerve of the penis in males. It is a terminal branch of the pudendal nerve. See also * Posterior labial nerves * Perineal nerve The perineal nerve is a nerve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anogenital Distance
Anogenital distance (AGD) is the distance from the midpoint of the anus to the genitalia, the underside of the vagina, the clitoris or the scrotum. It is considered medically significant for a number of reasons, in both humans and other animals, including sex determination and as a marker of endocrine disruptor exposure. It is regulated by dihydrotestosterone, which can be disrupted by phthalates common in plastics. The ''anogenital index'' (AGI) is an index used to compare the AGD relative to a model based on body weight. It is computed as the AGD divided by weight GI = AGD/weight (mm/kg) Measurement The AGD is usually measured as follows: from the center of the anus to the posterior convergence of the fourchette (where the vestibule begins) in females (AGD-AF); and from the center of the anus to the junction of the smooth perineal skin with the rugate skin of the scrotum in males (AGD-AS). An alternative measurement, AGD-AC, defined only in females, is measured from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coccyx
The coccyx (: coccyges or coccyxes), commonly referred to as the tailbone, is the final segment of the vertebral column in all apes, and analogous structures in certain other mammals such as horse anatomy, horses. In tailless primates (e.g. humans and other great apes) since ''Nacholapithecus'' (a Miocene hominoid),Nakatsukasa 2004, ''Acquisition of bipedalism'' (SeFig. 5entitled ''First coccygeal/caudal vertebra in short-tailed or tailless primates.''.) the coccyx is the remnant of a Human vestigiality#Coccyx, vestigial tail. In animals with bony tails, it is known as Rump (animal), ''tailhead'' or ''dock'', in bird anatomy as ''tailfan''. It comprises three to five separate or fused coccygeal vertebrae below the sacrum, attached to the sacrum by a fibrocartilaginous joint, the sacrococcygeal symphysis, which permits limited movement between the sacrum and the coccyx. Structure The coccyx is formed of three, four or five rudimentary vertebrae. It articulates superiorly with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vagina
In mammals and other animals, the vagina (: vaginas or vaginae) is the elastic, muscular sex organ, reproductive organ of the female genital tract. In humans, it extends from the vulval vestibule to the cervix (neck of the uterus). The #Vaginal opening and hymen, vaginal introitus is normally partly covered by a thin layer of mucous membrane, mucosal tissue called the hymen. The vagina allows for Copulation (zoology), copulation and birth. It also channels Menstruation (mammal), menstrual flow, which occurs in humans and closely related primates as part of the menstrual cycle. To accommodate smoother penetration of the vagina during sexual intercourse or other sexual activity, vaginal moisture increases during sexual arousal in human females and other female mammals. This increase in moisture provides vaginal lubrication, which reduces friction. The texture of the vaginal walls creates friction for the penis during sexual intercourse and stimulates it toward ejaculation, en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outlet Of The Pelvis
The lower circumference of the lesser pelvis is very irregular; the space enclosed by it is named the inferior aperture or pelvic outlet. It is an important component of pelvimetry. Boundaries It has the following boundaries: * anteriorly: the pubic arch * laterally: the ischial tuberosities * posterolaterally: the inferior margin of the sacrotuberous ligament * posteriorly: the anterior border of the middle of the coccyx. Notches These eminences are separated by three notches: * one in front, the pubic arch, formed by the convergence of the inferior rami of the ischium and pubis on either side. * The other notches, one on either side, are formed by the sacrum and coccyx behind, the ischium in front, and the ilium above; they are called the sciatic notches; in the natural state they are converted into foramina by the sacrotuberous and sacrospinous ligaments. In situ When the ligaments are in situ, the inferior aperture of the pelvis is lozenge-shaped, bounded as follows: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendera Relief 13
Dendera ( ''Dandarah''; ; Bohairic ; Sahidic ), also spelled ''Denderah'', ancient Iunet 𓉺𓈖𓏏𓊖 “jwn.t”, Tentyris,(Arabic: Ewan-t إيوان-ة ), or Tentyra is a small town and former bishopric in Egypt situated on the west bank of the Nile, about south of Qena, on the opposite side of the river. It is located approximately north of Luxor and remains a Latin Catholic titular see. It contains the Dendera Temple complex, one of the best-preserved temple sites from ancient Upper Egypt. Etymology The original name of the town is , the etymology of which is unknown. It was later complemented by the name of the chief goddess Hathor and became Egyptian which is the source of or just "of the goddess", which is the source of . The modern Arabic name of the town comes from either its Greek or Coptic name. There is also an aberrant Coptic form , which could be either dissimilation of a regular name or a confusion with Koine . Temple complex The ''Dendera Temple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Gray
Henry Gray (1827 – 13 June 1861) was a British anatomist and surgery, surgeon most notable for publishing the book ''Gray's Anatomy''. He was elected a Fellow of the Royal Society (FRS) at the age of 25. Biography Gray was born in Belgravia, London, in 1827 and lived most of his life in London. In 1842, he entered as a student at St George's Hospital, St. George's Hospital, London (then situated in Belgravia, now moved to Tooting), and he is described by those who knew him as a most painstaking and methodical worker, and one who learned his anatomy by the slow but invaluable method of making dissections for himself. While still a student, Gray secured the triennial prize of Royal College of Surgeons of England, Royal College of Surgeons in 1848 for an essay entitled ''The Origin, Connexions and Distribution of nerves to the human eye and its appendages, illustrated by comparative dissections of the eye in other vertebrate animals.'' In 1852, at the early age of 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Anatomy
Surface anatomy (also called superficial anatomy and visual anatomy) is the study of the external features of the body of an animal.Seeley (2003) chap.1 p.2 In Bird anatomy, birds, this is termed ''topography''. Surface anatomy deals with anatomical features that can be studied by sight, without dissection. As such, it is a branch of gross anatomy, along with endoscopy, endoscopic and radiology, radiological anatomy.Standring (2008) ''Introduction'', ''Anatomical nomenclature'', p.2 Surface anatomy is a descriptive science. In particular, in the case of human surface anatomy, these are the form and proportions of the human body and the surface landmarks which correspond to deeper structures hidden from view, both in static pose and in motion. In addition, the science of surface anatomy includes the theories and systems of body proportions and related artistic canons. The study of surface anatomy is the basis for depicting the human body in classical art. Some pseudo-sciences such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
