There is a urethra in the middle of the prostate. It can be said that the prostate guards the upper mouth of the urethra, so the prostate is sick and urination is first affected.
Prostate is a very rare gonad in human body, and it has both internal and external secretion functions. As an exocrine gland, the prostate secretes about 2 ml of prostatic fluid every day, which is the main component of semen.
Extended data:
Tissue structure of prostate;
1 is composed of 30 ~ 50 polycystic glands, which flow into 15 ~ 30 ducts, opening in urethra respectively. Connective tissue and smooth muscle form the prostate capsule and extend into the matrix of gland to separate and surround acinus and duct.
2. Glands can be divided into three groups:
(1) Mucosal gland: the smallest, located in the urethral mucosa, with the catheter opening in the urethra.
(2) Submucous gland: It is located in the submucosa of urethra, and the catheter opens in the urethra on both sides of seminal vesicle.
(3) The main gland: located at the periphery of the prostate, accounting for most of the prostate, and also opening on both sides of the seminal vesicle.
Baidu encyclopedia-prostate