Coronal sulcus

The coronal sulcus is an important part of the male penis. Since the coronal sulcus is a concave position, if men do not pay attention to the health of the penis, it is easy to cause a lot of dirt residue on the coronal sulcus, thus causing corresponding glans diseases. Although the term coronal sulcus often appears in life, there are still a few men who do not know where the coronal sulcus is located. The following article explains the relevant knowledge of the coronal sulcus to male friends.

The coronal sulcus is the common name for the penis neck. The penis of an adult man is 5 to 9 cm long under normal conditions, and can double in length during erection. The glans penis is the bulging part at the front of the penis, with a sagittal urethral opening at the tip of the glans penis, and the slightly thinner part behind the glans penis is the penis neck; the body of the penis is cylindrical, hanging in the front and lower part of the pubic symphysis, and is the movable part; the root of the penis is hidden in the deep surface of the scrotum and perineum skin, fixed to the inferior pubic ramus and the sciatic ramus, and is the fixed part. The penis is composed of two corpora cavernosa and one corpora cavernosa of the urethra, and is covered with fascia and skin.

The coronal sulcus of the penis is located between the glans penis and the body of the penis. Its anatomical characteristics are that it is relatively flat and smooth, with relatively fixed mucosa and low mobility. The mechanism of the formation of the coronal sulcus is as follows: ① The front ends of the left and right corpora cavernosa gradually taper when they are embedded in the inner depression of the glans penis from the front end of the urethral corpora cavernosa, thus forming a sharp angle between the glans penis and the body of the penis. The surface of the sharp angle is covered by fascia tissue and skin to form a flat band of a certain width, namely the coronal sulcus; ② The superficial fascia of the penis terminates at the posterior edge of the coronal sulcus. There is only deep fascia under the coronal sulcus mucosa, and the deep fascia is closely connected to the coronal sulcus mucosa, so the mucosa of the coronal sulcus is relatively fixed and much less mobile than the mucosa of the inner plate of the foreskin.

Normally, the epidermis of the coronal sulcus is thin, tender, smooth and soft. In any case, if a new growth is found here, it is pathological. Because the coronal sulcus is easy to expose, new growths are also easy to find, so the "growth" or "discovery" of new growths in the coronary sulcus is a symptom that patients can easily and directly report.