Anatomy of three strictures in male urethra

Men and women make up the human population, reproduce and reproduce with each other, and form the development of human society. Although the body structures of men and women are mostly the same, there are very big differences in the urinary system. For example, in terms of reproductive organs, men’s reproductive organs are the male genitals, and women’s are the vagina. So, for men, what is the composition of the urethral opening? What do the three narrow and two bends of the male urethra refer to?

The male urethra is very different from the female urethral opening. For men, the urethral opening is both a passage for urine and ejaculation. Moreover, men’s urethral opening is long and curved, making it less susceptible to invasion by microorganisms such as bacteria than women.

Because the male urethra is relatively long, there are some turning points in the production process. These two turning points are what we often call the two bends, including the downward curvature of the phalanges and the forward curvature of the phalanges. Among them, the downward curve of the phalangeal bone is located directly below the ischial tubercle, with the center concave upward and forward. The position is relatively fixed and cannot be moved or changed. The forward bend of the phalanges is reversed, and can be lifted up to make the bend subside and straighten.

In addition to the two bends, the male urethra also has three other narrow places, namely the inner orifice, the membranous part and the outer orifice of the urethra. Therefore, when performing operations such as cystoscopy or flexible ureteroscopy, you need to pay special attention to these three narrow locations to avoid accidentally damaging the urethral orifice during the operation. In addition, when solid materials such as stones are present in the urethral opening, they are most likely to become lodged in this small position, which should be taken seriously.

Based on the detailed explanation in the previous article, I believe that all readers have a certain understanding of the two bends and three narrowings of the male urethra. These two bends and three strictures are unique to the male urethra. Understanding this anatomical knowledge can also facilitate doctors' operations, such as inserting ureters, entering ureteroscopes, flexible ureteroscopes, etc. In addition, when determining the location of solid matter such as stones, it can also be accurately located based on three narrow points, which should be paid attention to.