This article is about the human organ. For the organ of male animals in general, see Penis.
Human penis
A flaccid uncircumcised penis; naturally occurring pubic hair has been deliberately removed to show anatomical detail
Details
Precursor
Genital tubercle, urogenital folds
System
Genitourinary system, male reproductive system
Artery
Dorsal artery of the penis, deep artery of the penis, artery of bulb, internal pudendal artery
Vein
Deep dorsal vein, superficial dorsal vein of the penis, vein of bulb, internal pudendal veins
Nerve
Dorsal nerve of the penis, pudendal nerve
Lymph
Superficial inguinal lymph nodes
Identifiers
Latin
penis, pudendum virile, membrum virile
MeSH
D010413
TA98
A09.4.01.001
TA2
3662
FMA
9707
Anatomical terminology
[edit on Wikidata]
In human anatomy, the penis (/ˈpiːnɪs/; pl.: penises or penes; from the Latin pēnis, initially "tail"[1]) is an external male sex organ (intromittent organ) that additionally serves as the urinary duct. The main parts are the root, body, the epithelium of the penis including the shaft skin, and the foreskin covering the glans. The body of the penis is made up of three columns of tissue: two corpora cavernosa on the dorsal side and corpus spongiosum between them on the ventral side. The urethra passes through the prostate gland, where it is joined by the ejaculatory duct, and then through the penis. The urethra goes across the corpus spongiosum and ends at the tip of the glans as the opening, the urinary meatus. It is a passage both for excretion of urine and the ejaculation of semen.
An erection is the stiffening expansion and orthogonal reorientation of the penis, which occurs during sexual arousal. Erections can occur in non-sexual situations; spontaneous non-sexual erections frequently occur during adolescence and sleep. In its flaccid state, the penis is smaller, gives to pressure, and the glans is covered by the foreskin. In its fully erect state, the shaft becomes rigid and the glans becomes engorged but not rigid. An erect penis may be straight or curved and may point at an upward angle, a downward angle, or straight ahead. As of 2015[update], the average erect human penis is 13.12 cm (5.17 in) long and has a circumference of 11.66 cm (4.59 in).[2][3] Neither age nor size of the flaccid penis accurately predicts erectile length. There are several common body modifications to the penis, including circumcision and piercings.
The penis is homologous to the clitoris in females.[4]
^Berezow, Alex B. (March 2, 2015). "Is Your Penis Normal? There's a Chart for That". RealClearScience. Archived from the original on May 24, 2020. Retrieved July 7, 2018.
^Veale, D.; Miles, S.; Bramley, S.; Muir, G.; Hodsoll, J. (2015). "Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15 521 men". BJU International. 115 (6): 978–986. doi:10.1111/bju.13010. PMID 25487360. S2CID 36836535.
^Tortora, Gerard J; Anagnostakos, Nicholas P (1987). Principles of anatomy and physiology (5th ed.). New York: Harper & Row. pp. 727–728. ISBN 978-0060466695.
In human anatomy, the penis (/ˈpiːnɪs/; pl.: penises or penes; from the Latin pēnis, initially "tail") is an external male sex organ (intromittent organ)...
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erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Penile erection is the result of a...
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small penis. A common criterion is a dorsal (measured on top) penile length of at least 2.5 standard deviations smaller than the mean humanpenis size...
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double-layered fold of skin, mucosal and muscular tissue at the distal end of the humanpenis that covers the glans and the urinary meatus. The foreskin is attached...
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elastic strip of tissue on the underside of the glans and the neck of the humanpenis. In men who are not circumcised, it also connects the foreskin to the...
Buried penis, also called hidden penis or retractile penis, is a congenital or acquired condition in which the penis is partially or completely hidden...
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peoples of Icelandic folklore. In July 2011, the museum obtained its first humanpenis, one of many promised by would-be donors. Its detachment from the donor's...
been done into the dimensions of the human vagina, but it has not been as intensively researched as humanpenis size. A 1996 study by Pendergrass et al...
Penis reduction or penis reduction surgery refers to efforts or an assortment of techniques intended to decrease the girth or length of the human penis...
ligament, on to the dorsum of the penis, and ends on the glans penis. It innervates the skin of the penis. In humans, it has 8290 ± 2553 axons, in 25–45...
Human sexuality portal Nudity portal Sex work portal Puppetry of the Penis is a comedic live performance-art show featuring a series of genital contortions...
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