What does a normal man's penis look like?

The penis is a man's treasure, known as the "lifeline", but many men don't know much about their "lifeline". What are the specifications of a normal man's penis? Do boys know its structure and length? Its role, physiological function, and many other contents will be introduced to you. Let's take a look at the analysis of a normal man's penis.

The length of a normal adult male penis is: the normal length range is 4.9-8.6 cm, the average is 6.55 cm, the longest is 10.6 cm, and the shortest is 3.7 cm. The average length of the penis of male college students aged 16-40 was measured, and the average circumference was 8.17 cm; the average length of the penis was 13.34 cm, which is similar to the calculated erection length of 13.08 cm, so the length of the penis can be considered to represent the length after erection.

Second function

1 Sexual intercourse

Sexual intercourse broadly refers to the mating behavior between male and female animals of different species, which requires the participation, stimulation and excitement of reproductive organs. From a biological perspective, the purpose of sexual intercourse is reproduction.

Sexual intercourse refers to the act of a man inserting his penis into the vagina or anus, and ejaculating due to arousal to transport sperm. During sexual intercourse, the man's penis must be erect, and the woman's vagina is lubricated due to arousal, making it easier for the penis to enter the vagina.

2Urination

Urinating is the process by which urine is produced by the kidneys and temporarily stored in the bladder through the ureters. When a certain amount of urine is stored, it is excreted from the body through the urethra multiple times. Urinating is a complex reflex activity controlled by the central nervous system. The penis is the outlet for urination in male animals.

3 Ejaculation

Ejaculation is a reflex action of male animals to eject semen during sexual intercourse. Human ejaculation is a series of coordinated actions of various parts of the reproductive system, and semen is ejected from the penis. It includes a two-step spinal reflex, the primary center is in the lumbar sacral spinal cord, and its sensory impulse is transmitted by the touch receptors of the glans penis.

Ejaculation is a complex process that includes erection, ejaculation, ejaculation and orgasm. Erection is due to the swelling and hardening of the penis, and its primary nerve innervation comes from the sacral nerve complex and the pelvic visceral nerve or erectile nerve.

Many men have concerns about their penis being too small, which often leads to psychological barriers in their sexual life after marriage. As long as a man has a normal erection and can have actual sexual intercourse, he does not have to worry about the size of his penis. It is good to have some knowledge about the penis problems of normal men. If there is a problem, you need to get it checked. Expand your knowledge.