The penis is one of the most important organs in the male body. It is also called a penis and its main function is reproduction. Many men say they know a lot about the penis, but experts have found that many men only know the surface of the penis and are not very clear about its structure. Today, let's take you to learn about the structure of the penis. Anatomy The penis is the mating organ of male animals. It is composed of three parallel long columnar corpora cavernosa. The upper two corpora cavernosa are called penile corpora cavernosa and the lower one is called urethral corpora cavernosa. Each corpus cavernosum is covered with a thick and dense fibrous membrane, which is called the penile corpora cavernosa tunica albuginea and the urethral corpora cavernosa tunica albuginea. The interior of the corpus cavernosum is composed of many trabeculae and cavities. The cavities are sinus spaces that communicate with blood vessels. When the cavities are filled with blood, the penis becomes thicker and harder and erects. The three corpora cavernosa are covered by superficial and deep penis fascia and skin. Corpus cavernosum The cavernous body of penis is a cylindrical body with two tapered ends, one on the left and one on the right, located on the back of the penis. The left and right bodies are closely connected, extending forward, with the tip tapering and embedded in the depression behind the glans penis. The rear end of the cavernous body of penis is separated to the left and right, called the crus penis, which are attached to the inferior pubic branch and the sciatic branch on both sides respectively. Corpus cavernosum of urethra The cavernous body of urethra is located on the ventral side of the corpus cavernosum of the penis, and the urethra runs through its entire length. The middle part is cylindrical, with the front end enlarged into the glans penis and the rear end enlarged into the bulbofurethra, which is located between the two penis crus and fixed below the urogenital diaphragm. Penis bone The baculum refers to the bones in the penis of some mammals. It is a special bone that is not connected to other bones in the body. It is mainly rod-shaped and usually hidden in the stomach of the animal. When needed, it is pushed into the fleshy part of the penis by a group of muscles. This bone is prepared for mating. With it, the initiative and reaction speed of penis erection are greatly increased. In the cruel competition where mating opportunities are fleeting, having this equipment will undoubtedly give you a great advantage. The erection of a penis without a baculum is completely dependent on congestion. Primitive monotremes and marsupials do not have a penis bone. Most placental mammals have a baculum, a penis bone, while only a few do not. Among placental mammals, those without a penis bone include elephants, rhinos, horses, donkeys, rabbits, hyenas, whales, and dolphins. |
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