Where are the three strictures of the male urethra located?

Men are the backbone of the family, so men's health is very important, but some men often have some problems, such as abnormal reproductive system. We have also heard of the three urethral strictures in men, but where are the three urethral strictures in men? Let's solve this problem. If we can understand the relevant content, then we can treat the disease in time, and of course, there is no big problem in general.

The prostatic part is the part where the urethra passes through the prostate. The lumen is the widest and is about 2.5 cm long. There is a longitudinal bulge on the posterior wall, called the urethral ridge. The bulge in the middle of the ridge is called the spermatic colliculus. There is a small depression in the center of the spermatic colliculus, called the prostatic cyst. There is a pair of small ejaculatory duct openings on both sides.

There are many openings of the prostate excretory ducts on the urethral mucosa near the spermatic colliculus; the membranous part is the part of the urethra that passes through the urogenital diaphragm, surrounded by the membranous urethral sphincter, with a narrow lumen, and is the shortest of the three parts, about 1.2 cm long; the cavernous body is the part of the urethra that passes through the urethral cavernous body. The urethra inside the bulb is the widest, called the bulbourethral part, where the bulbourethral glands open. The urethra at the glans penis expands into the fossa scaphoidis. There are many mucous glands called urethral glands in the submucosal layer of the urethra, and their excretory ducts open in the mucosa.

The urethra has three anatomical narrow parts and dilated parts. The former are located at the external opening, membranous part and internal opening, respectively, and the latter are located at the navicular fossa, bulbous part and prostatic part. The diameter of each part of the normal adult urethra is slightly different, with an average of about 8 mm. The commonly used urethral instruments are about 24~26 in size.

When using a cystoscope or urethral dilation, the maximum standard is 24. The urethra has two bends in an "S" shape. The first bend is in the membranous part of the urethra, called the subpubic bend, with an angle of 93°. The second bend is the anterior pubic bend. When the penis is moved forward toward the abdominal wall, the anterior pubic bend disappears, but the subpubic bend cannot be straightened artificially. Therefore, when inserting the instrument, it should be inserted gently along this bend, and not roughly to avoid injury.

The above is about where the three strictures of the male urethra are located. After understanding them, you can make judgments on how to solve the relevant problems. Because the male urethral system is very complicated, once a disease occurs, it is easy to cause other serious diseases, so it should not be ignored. So men must pay attention to taking care of their bodies in normal times.