peenistruktuuri

Peenistruktuuri refers to the internal and external anatomical components of the penis. Externally, it includes the glans, which is the sensitive tip, and the shaft, covered by skin. The foreskin is a retractable fold of skin that covers the glans in uncircumcised males. Internally, the penis is composed of three cylindrical bodies of erectile tissue: the two corpora cavernosa, which run along the top of the shaft, and the corpus spongiosum, which surrounds the urethra and forms the glans. The urethra, a tube that carries both urine and semen, runs through the corpus spongiosum. Blood vessels, nerves, and connective tissues are integral to the penis's structure and function, enabling erection and ejaculation. The vascular supply is crucial for erectile function, with arteries delivering blood to the erectile tissues and veins draining it away. The nerve endings, particularly concentrated in the glans, are responsible for sensation. The musculature surrounding these tissues also plays a role in sexual response. The overall peenistruktuuri is complex and adapted for sexual reproduction and urination.