Post Date December, 03 2023
The male reproductive system includes the following organs: testis, epididymis, scrotum, vas deferens, seminal vesicle, ejaculatory duct, prostate, penis, etc. The testicles are wrapped in the scrotum, and the scrotum and penis are exposed outside the body, so they are called external genitalia. The rest of the organs are hidden in the lower abdomen, so they are called internal genitalia. Now they are described as follows:
1. The scrotum and testis: the scrotum is at the back of the penis and in front of the anus, with many wrinkles on the surface, which is brown. There is also a thin layer of muscle under the skin. When the muscles contract, the scrotum will naturally shrink and become smaller, and the wrinkles will also deepen. The scrotum is divided into two parts, one is left and the other is right. There is a layer of smooth membrane inside, which covers the testis and epididymis. There are two testicles, which are oval. The testicles of newborn babies are about the size of peanuts, and the testicles of young children grow to the size of sparrow eggs, and become the size of pigeon eggs in adulthood. Generally, the left testicle is larger than the right testicle and lower than the right testicle. There is a smooth membrane on the surface of the testicle, which can slide naturally in the scrotum, so it will not be damaged during intense exercise. The testicle is the most important organ in the male reproductive system. It has the function of producing sperm and secreting male excitatory cord. The testicle is divided into many septa or valves, and there are many very thin and curved small tubes in each valve, called convoluted seminiferous tubes. These tubes are where sperm is produced. Between the tube and the tube, there are some secretory cells. These cells are the places where male hormones are secreted.
2. Epididymis: A flat epididymis is attached to the upper and rear sides of the testis. It is composed of many tortuous and small tubes. It connects the beginning of the vas deferens and the convoluted seminiferous tube of the testis. When the sperm leaves the testis, it stays in the epididymis and continues to grow and mature.
(Intern editor: Cai Junyi)
