Siittimen

Siittimen is a Finnish term that translates to "penis" in English. It refers to the external male reproductive organ responsible for sexual intercourse and urination. The siittimen is composed of spongy erectile tissue that fills with blood during sexual arousal, causing it to become erect. This erection is essential for the act of coitus and for the delivery of sperm into the female reproductive tract.

Structurally, the siittimen consists of a shaft and a glans, which is the rounded tip. The glans is covered by a foreskin, or esinahka, in uncircumcised individuals. The urethra, a tube that carries urine from the bladder and semen during ejaculation, runs through the center of the siittimen. The organ's function is primarily reproductive, but it also plays a role in the excretion of waste products from the body.

The development of the siittimen is influenced by hormones, particularly testosterone, during puberty. Like other body parts, it is subject to various physiological processes and can be affected by medical conditions. The term "siittimen" is used in both medical and everyday contexts in Finnish.