Do boys grow hair down there?

The reproductive organs of male friends will naturally grow hair. This is a sign of maturity. Boys will begin to develop during puberty and grow hair at this time. This is mainly to block the invasion of bacteria and germs, so as to avoid more bacterial infections and viral invasions, which would cause any male diseases. In addition, you should pay attention to cleaning the reproductive organs every day to prevent fungal growth.

The male genitals are the male reproductive system, which is the organ for male reproduction. It consists of two parts: the internal and external genitals. The external genitals include the scrotum and penis; the internal genitals include the reproductive glands (testicles), sperm ducts (epididymis, vas deferens, ejaculatory ducts and urethra) and accessory glands, seminal vesicles, prostate and bulbourethral glands. The male genitals begin to develop during puberty, and have reproductive functions after they mature.

Testicles: Their main functions are to produce sperm and secrete male hormones (testosterone). The former combines with the egg to form fertilization and is an important material basis for reproduction, while the latter is an important substance for maintaining male secondary sexual characteristics (secondary sexual characteristics).

Epididymis: The main function is to promote sperm development and maturation, as well as to store and transport sperm. Sperm is produced from the seminiferous tubules of the testes, but lacks motility and fertility. It needs to continue to develop and mature, and this stage mainly takes place in the epididymis. The epididymis secretes a fluid that directly feeds sperm maturation, called epididymal fluid. The fluid has high potassium, high concentration of glycerophosphocholine, high concentration of glycosidase, low acidity and alkalinity, high osmotic pressure, low oxygen, and high carbon dioxide.

Vas deferens: It has strong peristalsis ability because of the thick muscle wall. Its main function is to transport and excrete sperm. During ejaculation, the sympathetic nerves quietly release a large amount of norepinephrine-like substances, which cause the vas deferens to contract in a coordinated and powerful manner, quickly transporting sperm to the sperm excretory duct, ejaculatory duct and urethra.

Seminal vesicle: The main function is to secrete a kind of mucus, which neither produces nor stores sperm. The seminal vesicle secretion contains alkaline colloidal fluids such as mucus, choline phosphate, globulin, citric acid and glycosides, among which the main components are citric acid (125mg/100ml) and glycosides (315mg/100ml). They are the main components of semen (accounting for about 50% to 80%) and are discharged after prostatic fluid during ejaculation. Glycosides provide the main energy source for sperm activity after ejaculation.