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The Penis

The Penis

The penis is an external organ of the male reproductive system. It has two main functions sexual intercourse during erotic stimulation, the penis undergoes erection, becoming engorged with blood.

The human penis is an external male intromittent organ that additionally serves as the urinal duct. The main parts are the root (radix) the body (corpus) and the epithelium of the penis including the shaft skin and the foreskin (prepuce) covering the glans penis. 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 Penis

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Penis Wikipedia

The penis contains the external opening of the urethra, which is used for urination and to deliver semen into the vagina of a female sexual partner. Erectile tissue inside the penis allows the penis to increase in size and become rigid during sexual stimulation.

The penis in most male coleoid cephalopods is a long and muscular end of the gonoduct used to transfer spermatophores to a modified arm called a hectocotylus. That, in turn, is used to transfer the spermatophores to the female.

The development of the phallus halts, leaving the opening of the urethra under instead of at the top of the penis. The opening can be anywhere from the underside of the glans penis, down the ventral line as far as the top of the scrotum.

The Penis

  the penis is the male sex organ, reaching its full size during puberty. In addition to its sexual function, the penis acts as a conduit for urine to leave the body.