Anatomy of the three strictures of the male urethra

Men and women make up the human species, living and reproducing with each other, and forming 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 male genitals, while women's are in the vagina. So, for men, what are the components of their urethral opening? What do the three narrow and two bends of the male urethra mean?

The male urethra is very different from the female urethra. For men, the urethra is both a passage for urination and ejaculation. In addition, the male urethra is long and curved, making it less susceptible to invasion by bacteria and other microorganisms than that of women.

Because the male urethra is relatively long, there are some turning points in the process of its formation. These two turning points are what we often call the two bends, including the phalangeal bend and the anterior bend. The phalangeal bend is located below the ischial tuberosity, forward and upward of the joint concave, and its position is relatively fixed and cannot be moved or changed. On the contrary, the anterior bend of the phalanges can be lifted to make this bend disappear and straighten.

In addition to the two bends, the male urethra also has three other narrow parts, namely the internal urethral opening, the membranous part and the external urethral opening. Therefore, when performing cystoscopy or ureterolithotomy, special attention should be paid to these three narrow parts to avoid accidentally damaging the urethral opening. In addition, when solid matter such as stones exists in the urethral opening, it is also most likely to get stuck in these narrow parts, which should be taken seriously.

According to the detailed explanation in the previous article, I believe that all readers have already had a certain understanding of the two bends and three constrictions of the male urethra. These two bends and three constrictions are unique to the male urethra. Understanding this anatomical expertise can also facilitate doctors' actual operations, such as catheterization, ureteroscope, and ureteroscopy. In addition, when clarifying the location of solid objects such as stones, the three constrictions can also be used to accurately locate them, which should be paid attention to.