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Among all primates, the human penis is the largest in girth, but is comparable to the chimpanzee penis and the penises of certain other primates in length. [13] Penis size is affected by genetics , but also by environmental factors such as fertility medications [ 14 ] [ unreliable medical source? ] and chemical/pollution exposure.
The penis can significantly shrink due to scar tissue formation from a condition called Peyronie's disease which affects up to 10% of men. [83] Products such as penis pumps, pills, and other dubious means of penis enlargement are some of the most marketed products in email spam. At present there is no consensus in the scientific community of ...
A penis (/ ˈ p iː n ɪ s /; pl.: penises or penes) is a male sex organ that is used to inseminate female or hermaphrodite animals during copulation. [ 1 ] [ 2 ] Such organs occur in both vertebrates and invertebrates , including humans, but not in all male animals.
An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal, sexual attraction or libido, although erections can also be spontaneous.
Articles relating to sexual intercourse (coitus, copulation), the insertion and thrusting of the male penis inside the female vagina for sexual pleasure, reproduction, or both. Sexual penetration has been known by humans since the dawn of time, and has been an instinctive form of sexual behaviour and psychology among humans.
Inside the penis is the urethra, which is used to ejaculate semen and to excrete urine. Both substances exit through the meatus . When a male becomes sexually aroused , erection occurs because sinuses within the erectile tissues of the penis ( corpora cavernosa and corpus spongiosum ) become filled with blood.
In male human anatomy, the glans penis or penile glans, [1] commonly referred to as the glans, (/ ɡ l æ n z /; from Latin glans meaning "acorn") [2] is the bulbous structure at the distal end of the human penis that is the human male's most sensitive erogenous zone and primary anatomical source of sexual pleasure.
Articles relating to the human penis, 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.