Penis anatomy

The male genitals are one of the most important organs in the male body. They are also called penises, and their key role depends on reproduction. Many men claim to have a good understanding of their genitals, but authoritative experts have found that many men only have a superficial understanding of their genitals and are not very clear about their structure. Today, let's take everyone to understand the structure of the penis.

Anatomical structure

The male genitals are the mating organs of male animals. They are composed of three parallel long cylindrical corpora cavernosa. The upper two corpora cavernosa are called corpora cavernosa, and the lower one is called corpora cavernosa. Each corpus cavernosa is covered with a thick and dense chemical fiber membrane, which are called the tunica albuginea of ​​the corpus cavernosum and the tunica albuginea of ​​the corpus cavernosum.

The interior of the corpus cavernosum is composed of many posterior corpus cavernosum capsules and cavities. The cavities are sinus spaces that communicate with blood vessels. When the cavities are swollen with blood, the penis becomes wide and hard. The three corpora cavernosa are surrounded by superficial and deep muscle fascia and skin.

Corpus cavernosum

The cavernous body of penis is a thin cylinder on each side, one on the left and one on the right, located between the bones of the male genitals. The left and right sides are closely connected, extending forward, narrowing at the top, and placed in the indentation behind the glans penis. The rear end of the cavernous body develops and separates on the left and right sides, called the male genital crus, which are attached to the lower ramus of the phalanges and the sciatic nerve branches on both sides.

Corpus cavernosum of urethra

The corpus cavernosum of the urethra is located in the internal oblique muscle of the corpus cavernosum, and the urethral opening surrounds its total length. It is cylindrical in the middle, with a large front end called the glans penis and a large back end called the bulbofurethra, located between the two male genital crus and fixed below the urogenital diaphragm.

Penis bone

The baculum refers to the bone in the male genitals of some mammals. It is an abnormal bone that does not connect to other bones in the human body. The key is rod-shaped and usually hidden in the stomach of small animals. When needed, a group of muscles push it into the fleshy part of the male genitals; this bone is prepared for breeding. With it, the consciousness and reaction speed of penis erection are greatly increased. In the fierce market competition where breeding opportunities are fleeting, having this weapon will undoubtedly be a great advantage. Without the baculum, penis erection depends entirely on blood stasis.

Initially bipedal and marsupial mammals do not have a penis. Most embryonic mammals have a baculum, a penis bone, while only a few do not. Among embryonic mammals, the following do not have a penis: baby elephants, rhinos, horses, donkeys, rabbits, hyenas, whales, and whales.