What is the normal length of a man's urethra? Have you ever tested it?

How long is the male penis when erect? This is a common concern for many men. The length of the male penis is related to sexual life. When measuring the length of the penis when erect, have you ever thought about the length of the male urethra?

Male urethra length

The prostatic part is the part of the urethra that passes through the prostate. It has the widest lumen and is about 2.5 cm long. There is a longitudinal bulge on the posterior wall, called the urethral crest. The part that bulges in the middle of the crest is called the colliculus. There is a small depression in the center of the colliculus, called the prostatic cyst. There is a pair of small ejaculatory duct openings on both sides. There are many openings of the prostatic excretory ducts on the urethral mucosa near the colliculus. The membranous part is the part of the urethra that passes through the urogenital diaphragm. It is surrounded by the membranous urethral sphincter and has a narrow lumen. It is the shortest of the three parts and is about 1.2 cm long. The cavernous part is the part of the urethra that passes through the urethral cavernous body. The urethra inside the urethral bulb is the widest, called the bulbous urethral part, where the bulbourethral gland opens. The urethra at the glans penis expands into the fossa scaphoidae. There are many mucous glands under the urethral mucosa called urethral glands, and their excretory ducts open in the mucosa.

Three strictures of the male urethra

The male urethra has three narrowings, three dilations and two bends. The three narrowings are located at the internal urethral opening, the membranous part and the external urethral opening. The urethra has two bends: one bend is the inferior pubic bend, located below the pubic symphysis, 2 cm below the pubic symphysis, concave forward and upward, including the prostate part, the membranous part and the starting section of the cavernous body. The position of this bend is fixed and cannot be changed. The other bend is the anterior pubic bend, located in front and below the pubic symphysis, concave backward and downward, between the root and body of the penis.