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Urogenital Triangle
The urogenital triangle is the anterior part of the perineum. In female mammals, it contains the vulva, while in male mammals, it contains the penis and scrotum. Structure The urogenital triangle is the area bound by a triangle with one vertex at the pubic symphysis and the two other vertices at the iliac tuberosities of the pelvic bone. Components As might be expected, the contents of the urogenital triangle differ greatly between the male and the female. Some of the components include:Daftary, Shirish; Chakravarti, Sudip (2011). Manual of Obstetrics, 3rd Edition. Elsevier. pp. 1-16. . * Posterior scrotal nerves / posterior labial nerves * Urethra * Vagina * Bulbourethral gland / Bartholin's gland * Muscles ** Superficial transverse perineal muscle ** Ischiocavernosus muscle ** Bulbospongiosus muscle * Crus of penis, Penile crura / clitoral crura * Bulb of penis / vestibular bulbs * Urogenital diaphragm * Muscular perineal body * Superficial perineal pouch, Superficial and de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Superficial Transverse Perineal Muscle
The transverse perineal muscles (transversus perinei) are the superficial and the deep transverse perineal muscles. Superficial transverse perineal The superficial transverse perineal muscle (transversus superficialis perinei or Lloyd-Beanie muscle) is a narrow muscular slip, which passes more or less transversely across the perineal space in front of the anus. It arises by tendinous fibers from the inner and forepart of the ischial tuberosity and, running medially, is inserted into the central tendinous point of the perineum (perineal body), joining in this situation with the muscle of the opposite side, with the external anal sphincter muscle behind, and with the bulbospongiosus muscle in front. In some cases, the fibers of the deeper layer of the external anal sphincter cross over in front of the anus and are continued into thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anal Triangle
The anal triangle is the posterior part of the perineum. It contains the anus in mammals. Structure The anal triangle can be defined either by its vertices or its sides. * ''Vertices'' ** one vertex at the coccyx bone ** the two ischial tuberosities of the pelvic bone * ''Sides'' ** perineal membrane (posterior border of perineal membrane forms anterior border of anal triangle) ** the two sacrotuberous ligaments Contents Some components of the anal triangle include:Daftary, Shirish; Chakravarti, Sudip (2011). Manual of Obstetrics, 3rd Edition. Elsevier. pp. 1-16. . * Ischioanal fossa * Anococcygeal body * Sacrotuberous ligament * Sacrospinous ligament * Pudendal nerve * Internal pudendal artery and internal pudendal vein * Anal canal * Muscles ** Sphincter ani externus muscle ** Gluteus maximus muscle ** Obturator internus muscle ** Levator ani muscle ** Coccygeus muscle Additional images Image:Gray320.png, Articulations of pelvis. Posterior view. Image:Gray5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Perineal Pouch
The deep perineal pouch (also deep perineal space) is the anatomic space enclosed in part by the perineum and located superior to the perineal membrane. Structure The deep perineal pouch is bordered inferiorly by the perineal membrane, also known as the inferior fascia of the urogenital diaphragm. It is bordered superiorly by the superior fascia of the urogenital diaphragm. The deep pouch is now described as the region between the perineal membrane and the pelvic diaphragm.Netter, F., ''Atlas of Human Anatomy.''5th Ed. Saunders, Philadelphia, 2010. Contents The deep perineal pouch contains: * muscles ** Deep transverse perineal muscles ** External sphincter muscle of male urethra ** External sphincter muscle of female urethra ** Compressor urethrae muscle in the female is sometimes includedEssential Clinical Anatomy – 4th Edition. p.255 ** Urethrovaginal sphincter in the female is sometimes included * other ** Membranous urethra in the male; proximal portion of urethr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superficial Perineal Pouch
The superficial perineal pouch (also superficial perineal compartment/space/sac) is a compartment of the perineum. Structure The superficial perineal pouch is an open compartment, due to the fact that anteriorly, the space communicates freely with the potential space lying between the superficial fascia of the anterior abdominal wall and the anterior abdominal muscles: * its inferior border is the fascia of Colles, the deeper membranous layer of the superficial perineal fascia that covers the inferior border of the muscles of the superficial perineal pouch. (The fascia of perineum is a deep fascia that covers the superficial perineal muscles individually). * its superior border is the perineal membrane (inferior fascia of the urogenital diaphragm). Contents * Muscles ** Ischiocavernosus muscle ** Bulbospongiosus muscle ** Superficial transverse perineal muscle * Erectile bodies ** Corpora cavernosa ( of penis and of clitoris) ** Corpus spongiosum ( of penis) * Vessels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perineal Body
The perineum (: perineums or perinea) in 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 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 masculinization causes the development of a large anogenital distance in men, in comparison to the corresponding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urogenital Diaphragm
Older texts have asserted the existence of a urogenital diaphragm, also called the triangular ligament, which was described as a layer of the pelvis that separates the deep perineal sac from the upper pelvis, lying between the inferior fascia of the urogenital diaphragm (perineal membrane) and superior fascia of the urogenital diaphragm. While this term is used to refer to a layer of the pelvis that separates the deep perineal sac from the upper pelvis, such a discrete border of the sac probably does not exist. While it has no official entry in Terminologia Anatomica, the term is still used occasionally to describe the muscular components of the deep perineal pouch. The urethra and the vagina, though part of the pouch, are usually said to be passing through the urogenital diaphragm, rather than part of the diaphragm itself. Some researchers still assert that such a diaphragm exists, and the term is still used in the literature. The urethral diaphragm is an anatomic landmark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vestibular Bulb
In female anatomy, the vestibular bulbs, bulbs of the vestibule or clitoral bulbs are two elongated masses of erectile tissue typically described as being situated on either side of the vaginal opening. They are united to each other in front by a narrow median band. Some research indicates that they do not surround the vaginal opening, and are more closely related to the clitoris than to the vestibule. They constitute the root of the clitoris along with the crura. Structure Research indicates that the vestibular bulbs are more closely related to the clitoris than to the vestibule because of the similarity of the trabecular and erectile tissue within the clitoris and bulbs, and the absence of trabecular tissue in other genital organs, with the erectile tissue's trabecular nature allowing engorgement and expansion during sexual arousal. Ginger et al. state that although a number of texts report that they surround the vaginal opening, this does not appear to be the case and tun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulb Of Penis
The bulb of penis is the proximal/posterior bulged end of the (unpaired median) corpus spongiosum penis. Together with the two crura (one crus on each side of the bulb), it constitutes the root of the penis. It is covered by the bulbospongiosus. Proximally/posteriorly, the bulb of penis extends towards the perineal body The perineum (: perineums or perinea) in 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 regio .... The bulb exhibits a slight yet palpable midline notch upon its inferior aspect. The male urethra enters the penis at the superior aspect of the anterior part of the bulb (most of the bulb is thus situated inferoposteriorly to the urethra), and the arteries of bulb of penis enter near the urethra. The bulb of penis is homologous to the vestibular bulbs in females. Additional images File:Gray1142.png, Male ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clitoral Crura .
During sexual arousal, the crura become engorged with blood ...
The clitoral crura (: clitoral crus) are two erectile tissue structures, which together form a "V" shape. ''Crus'' is a Latin word that means "leg". Each "leg" of the ''V'' converges on the clitoral body. At each divergent point is a corpus cavernosum. Together with the vestibular bulbs, they form the clitoral root. The crura are attached to the pubic arch, and are adjacent to the vestibular bulbs. The crura flank the urethra, urethral sponge, and vagina and extend back toward the pubis. Each clitoral crus connects to the rami of the pubis and the ischium The ischium (; : is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crus Of Penis
The two crura of penis (one crus on each side) constitute the root of penis along with the bulb of penis. The two crura flank the bulb – one to each side of the bulb. Each crus is attached at the angle between the perineal membrane and ischiopubic ramus. The deep artery of the penis enters the anterior portion of the crus. Distally, each crus transitions into either corpus cavernosum of the body of the penis. Structure Each crus represents the tapering, posterior fourth of each corpora cavernosa penis; the two corpora cavernosa are situated alongside each other along the length of the body of penis while the two crura diverge laterally in the root of penis before attaching firmly onto either ischial ramus at their proximal end. Each crus begins proximally as a blunt-pointed process in anterior to the tuberosity of the ischium The ischial tuberosity (or tuberosity of the ischium, tuber ischiadicum), also known colloquially as the sit bones or sitz bones, or as a pai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulbospongiosus Muscle
The bulbospongiosus muscles (in older texts bulbocavernosus and, for female muscle, constrictor cunni) are a subgroup of the superficial muscles of the perineum. They have a slightly different origin, insertion and function in males and females. In males, these muscles cover the bulb of the penis, while in females, they cover the vestibular bulbs. In both sexes, they are innervated by the deep or muscular branch of the perineal nerve, which is a branch of the pudendal nerve. Structure In males, the bulbospongiosus is located in the middle line of the perineum, in front of the anus. It consists of two symmetrical parts, united along the median line by a tendinous perineal raphe. It arises from the central tendinous point of the perineum and from the median perineal raphe in front. In females, there is no union, nor a tendinous perineal raphe; the parts are disjoint primarily and arise from the same central tendinous point of the perineum, which is the tendon that is forme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
