Urosjärjestelmän

Urosjärjestelmän, also known as the male reproductive system, is a complex biological system responsible for sexual reproduction in males. It comprises several organs that work together to produce, store, and deliver sperm, the male gametes. Key components include the testes, which produce sperm and testosterone, the primary male sex hormone. The testes are located within the scrotum, a sac of skin that regulates their temperature for optimal sperm production.

Sperm mature and are stored in the epididymis, a coiled tube attached to the testes. During ejaculation, sperm travel through the vas deferens, a tube that carries them from the epididymis. The seminal vesicles and prostate gland contribute fluids to the semen, which nourishes and transports the sperm. The urethra, a tube that runs through the penis, serves as the passageway for both urine and semen to exit the body. The penis itself is the external organ responsible for delivering sperm into the female reproductive tract during sexual intercourse. Testosterone, produced by the testes, plays a crucial role in the development of male secondary sexual characteristics, such as deep voice, muscle mass, and body hair, and is essential for the functioning of the entire reproductive system.