NationMaster - Encyclopedia: Glans penis

The glans penis (or simply glans) is the sensitive tip of the penis. It is also commonly referred to as the "head" of the penis. Slang terms include "helmet" and "bell end". When the penis is flaccid it is wholly or partially covered by the foreskin, except in men who have been circumcised. Image File history File links Drawing of the Male Internal Sexual Anatomy From alt. ... Look up testes in Wiktionary, the free dictionary. ... Male Anatomy The epididymis is part of the human male reproductive system and is present in all male mammals. ... A corpus cavernosum is one of a pair of a sponge-like regions of erectile tissue which contain most of the blood in the male penis during erection. ... The foreskin or prepuce (a technically broader term that also includes the clitoral hood, the homologous structure in women) is a retractable double-layered fold of skin and mucous membrane that covers the glans penis and protects the urinary meatus when the penis. ... The word frenulum on its own is often used for the frenulum of prepuce of penis, which is an elastic band of tissue under the glans penis that connects to the prepuce, or foreskin to the vernal mucosa, and helps contract the prepuce over the glans. ... Nathan J. Youngers favorite peice of candy to suck on. ... Corpus spongiosum (Plural: Corpora Spongiosa) (also known as corpus cavernosum urethrae in older texts) is the mass of spongy tissue surrounding the male urethra within the penis. ... The penis (plural penises, penes) is an external male sexual organ. ... In some male mammals the scrotum is a protuberance of skin and muscle containing the testicles. ... For other uses, see Latins and Latin (disambiguation). ... For other uses, see Artery (disambiguation). ... The Urethral Artery arises a short distance in front of the artery of the urethral bulb. ... Elseviers logo. ... The penis (plural penises, penes) is an external male sexual organ. ... The foreskin or prepuce (a technically broader term that also includes the clitoral hood, the homologous structure in women) is a retractable double-layered fold of skin and mucous membrane that covers the glans penis and protects the urinary meatus when the penis. ... This article is about male circumcision. ...

Medical considerations

The meatus (opening) of the urethra is at the tip of the glans penis. In circumcised infants who wear diapers, the meatal area of the glans penis is without the protection of the foreskin and at slight risk of meatitis, meatal ulceration, and meatal stenosis.^[1] Baby cloth diaper filled with extra cloth. ... Urethral meatal stenosis is a narrowing (stenosis) of the opening of the urethra, the tube through which urine leaves the body from the urinary bladder. ...

The epithelium of the glans penis is mucocutaneous tissue.^[2] Birley et al. report that excessive washing with soap may dry the mucous membrane that covers the glans penis and cause non-specific dermatitis.^[3] Dermatitis is a blanket term literally meaning inflammation of the skin. It is usually used to refer to eczema, which is also known as Dermatitis eczema. ...

Inflammation of the glans penis is known as balanitis. It occurs in 3–11% of males, and up to 35% of diabetic males. It has many causes, including irritation, or infection with a wide variety of pathogens. Careful identification of the cause with the aid of patient history, physical examination, swabs and cultures, and biopsy are essential in order to determine the proper treatment.^[4] Balanitis is inflammation of the glans penis. ...

Anatomical details

The glans penis is the expanded cap of the corpus spongiosum. It is moulded on the rounded ends of the Corpora cavernosa penis, extending farther on their upper than on their lower surfaces. At the summit of the glans is the slit-like vertical external urethral orifice. The circumference of the base of the glans forms a rounded projecting border, the corona glandis, overhanging a deep retroglandular sulcus (the coronal sulcus), behind which is the neck of the penis. The proportional size of the glans penis can vary greatly. The penis (plural penises, penes) is an external male sexual organ. ... Corpus spongiosum (Plural: Corpora Spongiosa) is the mass of spongy tissue surrounding the male urethra within the penis. ... Corpus cavernosum can refer to: corpus cavernosum clitoridis corpus cavernosum penis Though not used today, the term corpus cavernosum urethrae was used for corpus spongiosum in older texts. ... A sulcus (pl. ...

The foreskin maintains the mucosa in a moist environment.^[5] In males who have been circumcised, but have not undergone restoration, the glans is permanently exposed and dry. Szabo and Short found that the glans of the circumcised penis does not develop a thicker keratinization layer.^[6] Studies have suggested that the glans is equally sensitive in circumcised and uncircumcised males.^[7] ^[8] This article is about male circumcision. ... Foreskin restoration is the process of expanding the residual skin on the penis, via surgical or non-surgical methods, to create the appearance of a natural foreskin (prepuce) covering the glans penis. ...

Halata & Munger (1986) report that the density of genital corpuscles is greatest in the corona glandis,^[9] while Yang & Bradley (1998) report that their study "showed no areas in the glans to be more densely innervated than others."^[10] End-bulbs found in the penis and the clitoris have received the name of genital corpuscles; in these situations they have a mulberry-like appearance, being constricted by connective-tissue septa into from two to six knob-like masses. ...

Halata & Spathe (1997) reported that "the glans penis contains a predominance of free nerve endings, numerous genital end bulbs and rarely Pacinian and Ruffinian corpuscles. Merkel nerve endings and Meissner corpuscles are not present."^[2]

Yang & Bradley argue that "The distinct pattern of innervation of the glans emphasizes the role of the glans as a sensory structure".^[10]

An anatomycal variant of glans is showed: Hirsuties papillaris genitalis Glans penis with Hirsuties papillaris penis Hirsuties papillaris coronae glandis enlarged Hirsuties papillaris coronae glandis macro Hirsuties papillaris genitalis is a clinical skin condition of the male genital organs. ...

Additional images

See also

A corpus cavernosum is one of a pair of a sponge-like regions of erectile tissue which contain most of the blood in the male penis during erection. ... The foreskin or prepuce (a technically broader term that also includes the clitoral hood, the homologous structure in women) is a retractable double-layered fold of skin and mucous membrane that covers the glans penis and protects the urinary meatus when the penis. ... The penis (plural penises, penes) is an external male sexual organ. ... The clitoris is a sexual organ that is present only in female mammals. ... The word frenulum on its own is often used for the frenulum of prepuce of penis, which is an elastic band of tissue under the glans penis that connects to the prepuce, or foreskin to the vernal mucosa, and helps contract the prepuce over the glans. ...

References

A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ... A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ... A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ... A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ... A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ...

External links

The State University of New York Health Science Center at Brooklyn, better known as SUNY Downstate Medical Center, is an academic medical center and is the only one of its kind in the Borough of Brooklyn in New York City. ... The State University of New York Health Science Center at Brooklyn, better known as SUNY Downstate Medical Center, is an academic medical center and is the only one of its kind in the Borough of Brooklyn in New York City. ... This article is about human male reproductive system. ... -1... In some male mammals the scrotum is a protuberance of skin and muscle containing the testicles. ... This article is about the organ. ... The dartos is a layer of smooth muscular fiber. ... The external spermatic fascia (intercrural or intercolumnar fascia) is a thin membrane, prolonged downward around the surface of the cord and testis. ... The cremaster muscle is a muscle that covers the testis. ... As the cremaster descends, it forms a series of loops which differ in thickness and length in different subjects. ... The internal spermatic fascia (infundibuliform fascia) is a thin layer, which loosely invests the cord; it is a continuation downward of the transversalis fascia. ... The perineal raphe extends from the anus, through the mid-line of the scrotum (scrotal raphe) and upwards through the posterior mid-line aspect of the penis (penile raphe). ... Male Anatomy The spermatic cord is the name given to the cord-like structure formed by the vas deferens and surrounding tissue (veins, arteries, nerves, and lymphatic vessels) that run from the abdomen down to each testicle. ... Look up testes in Wiktionary, the free dictionary. ... This page meets Wikipedias criteria for speedy deletion. ... For other structures with the same name, see Tunica albuginea. ... The Appendix testis is a vestigial remnant of the MÃ¼llerian duct present on on the upper testis attached to the tunica vaginalis about 90% of the time. ... The mediastinum testis extends from the upper to near the lower extremity of the gland, and is wider above than below. ... The glandular structure of the testis consists of numerous lobules. ... Each lobule of the testis is contained in one of the intervals between the fibrous septa which extend between the mediastinum testis and the tunica albuginea, and consists of from one to three, or more, minute convoluted tubes, the tubuli seminiferi. ... Leydig cells, also known as interstitial cells of Leydig, are found adjacent to the seminiferous tubules in the testes. ... A Sertoli cell (a kind of sustentacular cell) is a nurse cell of the testes which is part of a seminiferous tubule. ... The blood-testis barrier (abbreviated as BTB) is a barrier between the blood vessels and the seminiferous tubules of the animal testes. ... Cross section of the epithelium of a seminiferous tubule showing various stages of spermatocyte development Spermatogenesis is the process by which male spermatogonia develop into mature spermatozoa. ... A Spermatogonium (plural: spermatogonia) is an intermediary male gametogonium (a kind of germ cell) in the production of spermatozoa. ... Spermatocytogenesis is the male form of gametocytogenesis. ... Spermatogenesis refers to the creation, or genesis, of sperm cells, which occurs in the male gonads or testes. ... it is the creation of spermatids from secondary spermatocytes through mitosis ... The term spermatid refers to the haploid male germ cell that results from secondary spermatocyte division. ... Spermiogenesis is the creation of a spermatozoon from a spermatid. ... A spermatozoon or spermatozoan ( spermatozoa), from the ancient Greek ÏƒÏ€ÎÏÎ¼Î± (seed) and (living being) and more commonly known as a sperm cell, is the haploid cell that is the male gamete. ... Human male anatomy The testicles, known medically as testes (singular testis), are the male generative glands in animals. ... The tubuli seminiferi recti (or tubuli recti, or straight seminiferous tubules) enter the fibrous tissue of the mediastinum, and pass upward and backward, forming, in their ascent, a close net-work of anastomosing tubes which are merely channels in the fibrous stroma, lined by flattened epithelium, and having no proper... Rete testis is an anastomosing network of delicate tubules located in the hilum of the testicle (mediastinum testis) that carries sperm from the seminiferous tubules to the vasa efferentia. ... The efferent ducts are part of the testes and connect the rete testis with the epididymis. ... Male Anatomy The epididymis is part of the human male reproductive system and is present in all male mammals. ... On the head of the epididymis is a second small stalked appendage (sometimes duplicated); it is named the appendix of the epididymis (pedunculated hydatid), and is usually regarded as a detached efferent duct. ... Although more commonly associated with the ear, stereocilia are also found in the epididymis where they aid in absorption. ... The vas deferens (plural: vasa deferentia), also called ductus deferens, (Latin: carrying-away vessel) is part of the male anatomy of some species, including humans. ... At the fundus of the bladder the ductus deferens becomes enlarged and tortuous, and this portion is termed the ampulla. ... The Ejaculatory ducts are part of the human male anatomy, which cause the reflex action of ejaculation. ... The internal urethral orifice is placed at the apex of the trigonum vesicae, in the most dependent part of the bladder, and is usually somewhat crescentic in form; the mucous membrane immediately behind it presents a slight elevation, the uvula vesicae, caused by the middle lobe of the prostate. ... In anatomy, the urethra (from Greek Î¿Ï…ÏÎ®Î¸ÏÎ± - ourethra) is a tube which connects the urinary bladder to the outside of the body. ... The prostatic urethra, the widest and most dilatable part of the canal, is about 3 cm. ... The intermediate part of male urethra (membranous portion) is the shortest, least dilatable, and, with the exception of the external orifice, the narrowest part of the canal. ... The spongy urethra (cavernous portion of urethra, penile urethra) is the longest part of the urethra, and is contained in the corpus cavernosum urethraeÃ¦. It is about 15 cm. ... The cavernous portion of the urethra is narrow, and of uniform size in the body of the penis, measuring about 6 mm. ... Nathan J. Youngers favorite peice of candy to suck on. ... The seminal vesicles are a pair of simple tubular glands posterinferior to the urinary bladder of males. ... Each seminal vesicle consists of a single tube, coiled upon itself, and giving off several irregular cecal diverticula; the separate coils, as well as the diverticula, are connected together by fibrous tissue. ... The prostate is a compound tubuloalveolar exocrine gland of the male mammalian reproductive system. ... Upon the posterior wall of the prostatic urethra is a narrow longitudinal ridge, the urethral crest, formed by an elevation of the mucous membrane and its subjacent tissue. ... At the forepart of the urethral crest, below its summit, is a median elevation, the seminal colliculus, upon or within the margins of which are the following: the orifices of the prostatic utricle the slit-like openings of the ejaculatory ducts. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... The Ejaculatory ducts are part of the human male anatomy, which cause the reflex action of ejaculation. ... On either side of the urethral crest is a slightly depressed fossa, the prostatic sinus, the floor of which is perforated by numerous apertures, the orifices of the prostatic ducts from the lateral lobes of the prostate. ... The prostatic ducts (or prostatic ductules) open into the floor of the prostatic portion of the urethra, and are lined by two layers of epithelium, the inner layer consisting of columnar and the outer of small cubical cells. ... A bulbourethral gland (or Cowpers gland) is one of two small exocrine glands present in the reproductive system of human males. ... The penis (plural penises, penes) is an external male sexual organ. ... The root of the penis is triradiate in form, consisting of the diverging crura, one on either side, and the median urethral bulb. ... For their anterior three-fourths the corpora cavernosa penis lie in intimate apposition with one another, but behind they diverge in the form of two tapering processes, known as the crura, which are firmly connected to the rami of the pubic arch. ... Just before each crus of the penis meets its fellow it presents a slight enlargement, named by Kobelt the bulb of the corpus cavernosum penis. ... The fundiform ligament is a specialization of the superficial (Scarpas) fascia of the abdomen. ... In males, the suspensory ligament of the penis is attached to the pubic symphysis, which holds the penis close to the pubic bone and supports it when erect. ... The body of the penis extends from the root to the ends of the corpora cavernosa penis, and in it these corpora cavernosa are intimately bound to one another. ... A corpus cavernosum is one of a pair of a sponge-like regions of erectile tissue which contain most of the blood in the male penis during erection. ... Corpus spongiosum (Plural: Corpora Spongiosa) (also known as corpus cavernosum urethrae in older texts) is the mass of spongy tissue surrounding the male urethra within the penis. ... The foreskin or prepuce (a technically broader term that also includes the clitoral hood, the homologous structure in women) is a retractable double-layered fold of skin and mucous membrane that covers the glans penis and protects the urinary meatus when the penis. ... The word frenulum on its own is often used for the frenulum of prepuce of penis, which is an elastic band of tissue under the glans penis that connects to the prepuce, or foreskin to the vernal mucosa, and helps contract the prepuce over the glans. ... The circumference of the base of the glans forms a rounded projecting border, the corona of the glans penis, overhanging a deep retroglandular sulcus, behind which is the neck of the penis. ... Fascia is specialized connective tissue layer which surrounds muscles, bones, and joints, providing support and protection and giving structure to the body. ... The subcutaneous tissue of penis (or superficial penile fascia) is continuous above with the fascia of Scarpa, and below with the dartos tunic of the scrotum and the fascia of Colles. ... Bucks fascia is a layer of deep fascia covering the penis. ... The fibrous envelope of the corpus cavernosum urethrÃ¦ (or tunica albuginea) is thinner, whiter in color, and more elastic than that of the corpora cavernosa penis. ... The corpora cavernosa penis are surrounded by a strong fibrous envelope consisting of superficial and deep fibers. ...

Contents