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Encyclopedia > Perineum
Perineum
The muscles of the male perineum
Gray's subject #120 424
Artery perineal artery, dorsal artery of the penis, deep artery of the penis
Nerve perineal nerve, posterior scrotal nerves, dorsal nerve of the penis, dorsal nerve of clitoris
Lymph primarily superficial inguinal lymph nodes
Dorlands/Elsevier p_13/12627677

In human anatomy, the perineum, also called the "taint", or "gooch", is generally defined as the surface region in both males and females between the pubic symphysis and the coccyx. Image File history File links Mergefrom. ... Taint is a term used to refer to the perineum (the region of the human body between the testicles or vagina and the anus). ... Image File history File links Gray406. ... Section of an artery For other uses, see Artery (disambiguation). ... The Perineal Artery (superficial perineal artery) arises from the internal pudendal, and turns upward, crossing either over or under the Transversus perinæi superficialis, and runs forward, parallel to the pubic arch, in the interspace between the Bulbocavernosus and Ischiocavernosus, both of which it supplies, and finally divides into several... The Dorsal Artery of the Penis ascends between the crus penis and the pubic symphysis, and, piercing the inferior fascia of the urogenital diaphragm, passes between the two layers of the suspensory ligament of the penis, and runs forward on the dorsum of the penis to the glans, where it... The Deep Artery of the Penis (a. ... Nerves (yellow) Nerves redirects here. ... The perineal nerve is a nerve arising from the pudendal nerve that supplies the perineum. ... The posterior scrotal (or labial) branches; superficial peroneal nerves) are two in number, medial and lateral. ... The dorsal nerve of the penis is the deepest division of the pudendal nerve; it accompanies the internal pudendal artery along the ramus of the ischium; it then runs forward along the margin of the inferior ramus of the pubis, between the superior and inferior layers of the fascia of... The dorsal nerve of the clitoris is a nerve in females that branches off the pudendal nerve to innervate the clitoris. ... In mammals including humans, the lymphatic vessels (or lymphatics) are a network of thin tubes that branch, like blood vessels, into tissues throughout the body. ... The superficial inguinal lymph nodes form a chain immediately below the inguinal ligament. ... Elseviers logo. ... List of bones of the human skeleton Human anatomy is primarily the scientific study of the morphology of the adult human body. ... The pubic symphysis is the midline cartilaginous joint uniting the superior rami of the left and right pubic bones (pubis). ... The coccyx is formed of up to five vertebrae. ...


A diamond-shaped area on the inferior surface of the trunk which includes the anus and, in females, the vagina[1]. Its definition varies: it can refer to only the superficial structures in this region, or it can be used to include both superficial and deep structures. Female Human Anatomy Male Human Anatomy This article is about the bodily orifice. ... The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ...


The perineum corresponds to the 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. ...


The anogenital distance is a measure of male feminisation measuring the distance between the anus and the base of the penis. Studies show that the perineum is twice as long in males as in females. The AGD in males may be shortened through exposure to phthalates found in some plastics. Female Human Anatomy Male Human Anatomy This article is about the bodily orifice. ... The penis (plural penises, penes) is an external male sexual organ. ... General chemical structure of phthalates. ...

Contents

Boundaries

Its deep boundaries are as follows:[2]

This page may meet Wikipedias criteria for speedy deletion. ... The term arcuate ligament refers to an arc-shaped ligament. ... A man and a woman in the Pioneer plaque. ... The coccyx is formed of up to five vertebrae. ... The Inferior Ramus of the ischium (ascending ramus) is the thin, flattened part of the ischium, which ascends from the superior ramus, and joins the inferior ramus of the pubis—the junction being indicated in the adult by a raised line. ... Human male pelvis, viewed from front Human female pelvis, viewed from front The pelvis is the bony structure located at the base of the spine (properly known as the caudal end). ... The Sacrotuberous Ligament (great or posterior sacrosciatic ligament) is situated at the lower and back part of the pelvis. ...

Triangles

A line drawn transversely across in front of the ischial tuberosities divides the space into two triangles: Posteriorly the Superior ramus of the ischium forms a large swelling, the tuberosity of the ischium, which is divided into two portions: a lower, rough, somewhat triangular part, and an upper, smooth, quadrilateral portion. ...

Name Location Contents
Urogenital triangle the anterior triangle in females, contains the vagina
Anal triangle the posterior triangle contains the anus

The urogenital triangle is the anterior part of the perineum. ... The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ... The anal triangle is the posterior part of the perineum. ... Female Human Anatomy Male Human Anatomy This article is about the bodily orifice. ...

Perineal fascia

The terminology of the perineal fascia can be confusing, and there is some controversy over the nomenclature. This stems from the fact that there are two parts to the fascia, the superficial and deep parts, and each of these can be subdivided into superficial and deep parts. Fascia is specialized connective tissue layer which surrounds muscles, bones, and joints, providing support and protection and giving structure to the body. ...


The layers and contents are as follows, from superficial to deep:

  • 2) superficial perineal fascia: Subcutaneous tissue divided into two layers: (a) A superficial fatty layer, and (b) Colles' fascia, a deeper, membranous layer.
  • 3) deep perineal fascia and muscles:
superficial perineal pouch Contains superficial perineal muscles: transversus perinei superficialis, bulbospongiosus, ischiocavernosus
inferior fascia of urogenital diaphragm, or perineal membrane A membranous layer of the deep fascia.
deep perineal pouch Contains the deep perineal muscles: transversus perinei profundus, sphincter urethrae membranaceae
superior fascia of the urogenital diaphragm Considered hypothetical by some modern anatomists, but still commonly used to logically divide the contents of the region.

Beyond overall skin structure, refer below to: See-also. ... The deep layer of superficial fascia (fascia of Colles) is thin, aponeurotic in structure, and of considerable strength, serving to bind down the muscles of the root of the penis. ... The superficial perineal pouch (also superficial perineal compartment/space/sac) is a compartment of the perineum. ... The Transversus perinei superficialis muscle is a muscle of the human body. ... Bulbospongiosus is one of the superficial muscles of the perineum. ... The ischiocavernosus muscle is a muscle just below the surface of the perineum, present in both men and women. ... The urogenital diaphragm is an archaic term describing a layer of the pelvis separating deep perineal sac from the upper pelvis. ... The perineal membrane is an anatomical term for a fibrous membrane in the perineum. ... Fascia is specialized connective tissue layer which surrounds muscles, bones, and joints, providing support and protection and giving structure to the body. ... The deep perineal pouch (also deep perineal space) is an anatomical term that refers to the partially enclosed space in the perineum, located superiorly to the perineal membrane. ... The Transversus perinei profundus muscle is a muscle of the human body. ... The Sphincter urethrae membranaceae muscle is a muscle of the human body. ... The superior fascia of the urogenital diaphragm is continuous with the obturator fascia and stretches across the pubic arch. ... The pelvic floor or pelvic diaphragm is composed of muscle fibers of the levator ani, the coccygeus, and associated connective tissue which span the area underneath the pelvis. ... The Levator ani is a broad, thin muscle, situated on the side of the pelvis. ... The Coccygeus is situated behind the levator ani. ...

Areas of the perineum

The region of the perineum can be considered a distinct area from pelvic cavity, with the two regions separated by the pelvic diaphragm. The following areas are thus classified as parts of the perineal region: The Levator ani and the Coccygeus together form the pelvic diaphragm and are associated with the pelvic viscera. ...

The Ischiorectal Fossa (or ischioanal fossa) is somewhat prismatic in shape, with its base directed to the surface of the perineum, and its apex at the line of meeting of the obturator and anal fasciæ. It is bounded: medially by the Sphincter ani externus and the anal fascia; laterally, by... The anal canal is the terminal part of the large intestine. ... The pudendal canal, also called Alcocks canal, is an anatomical structure in the pelvis through which the internal pudendal artery, internal pudendal veins, and the pudendal nerve pass. ... Internal pudendal artery is the terminal branch of the anterior trunk of the internal iliac artery which supplies the external genitalia. ... The pudendal nerve is responsible for orgasm, urination, and defecation in both sexes. ...

Riding

This area can become extremely sore among inexperienced bicyclists, horseback riders, motocross riders, and even ATV'ers.[citation needed]


Additional images

See also

Look up perineum in Wiktionary, the free dictionary.

Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... In female human anatomy, the frenulum labiorum pudendi (aka. ... Medio-lateral episiotomy as baby crowns. ... Surgery Surgery is the medical specialty that treats diseases or injuries by operative manual and instrumental treatment. ... Cutting is the separation of a physical object, or a portion of a physical object, into two portions, through the application of an acutely directed force. ... Parturition redirects here. ... The perineal body is a fibrous point in the middle line of the perineum. ... Guiche piercings are located between the scrotum and the anus (a female guiche piercing would be located between the genitalia and the anus, and hence in the same place as the male guiche — it is, however, extremely rare). ... This article does not cite any references or sources. ... Taint is a term used to refer to the perineum (the region of the human body between the testicles or vagina and the anus). ...

References

  1. ^ Gray, Henry. Anatomy of the Human Body. Philadelphia: Lea & Febiger, 1918; Bartleby.com, 2000.
  2. ^ perineumboundaries

External links


  Results from FactBites:
 
XII. Surface Anatomy and Surface Markings. 9. Surface Anatomy of the Perineum. Gray, Henry. 1918. Anatomy of the Human ... (312 words)
The junction of the mucous membrane of the anal canal with the skin of the perineum is marked by a white line which indicates also the line of contact of the external and internal Sphincters.
In the anterior part of the perineum the external genital organs are situated.
In the female are seen the skin reduplications forming the labia majora and minora laterally, the frenulum of the labia behind, and the prepuce of the clitoris in front; still more anteriorly is the mons pubis.
XII. Surface Anatomy and Surface Markings. 10. Surface Markings of the Perineum. Gray, Henry. 1918. Anatomy of the ... (761 words)
A line drawn transversely across in front of the ischial tuberosities divides the perineum into a posterior or rectal, and an anterior or urogenital, triangle.
This line passes through the central point of the perineum, which is situated about 2.5 cm.
Through the wall of the scrotum on either side the testis can be palpated; it lies toward the back of the scrotum, and along its posterior border the epididymis can be felt; passing upward along the medial side of the epididymis is the spermatic cord, which can be traced upward to the subcutaneous inguinal ring.
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