If you want to understand why the penis is erected, you must start with the anatomical structure of the penis.
The penis consists of 3 long sponge bodies, including two penis sponge bodies located on the back and a urethral sponge body located on the abdomen (through the urethra).The penis sponge body is an erectile tissue, especially the smooth muscles of the sponge sinus and arterial wall.The tissue surrounding the penis is the skin, the shallow penis fascia, the deep fascia and the white membrane of the penis.In order to effectively play a effect, these fascia must have a high degree of hardness and mid -axis power when the penis is erected, and it becomes soft when the penis is weak.And form a straight erection.The white film structure is complicated, the inner fiber is ring, and the outer layer is vertical.
A sound collagen fiber that sounds white film is closely related to the elastic fiber of its lower layer to one side and the other side of normal and strong sexual reactions.Multi -layered fascia arrangement can slide a layer of fascia on the other layer, so as to prevent venous blood from flow when erection.
Under normal circumstances, this obstruction mechanism is carried out at the same time as the small beams and small arteries of the smooth muscle, so that a large amount of arteries can flow into, expand the sponge bodies, and pressure the small vein under the white film.In addition, the fascia layer of the leukoplastment can obstruct the device vein, reducing the blood outflow of the penile vein and helping to form a completely hard erection.
What needs to be found out is that because the white membrane surrounded by the penis sponge body is thick and dense, the white film around the urethral sponge body is thin, and the hardness is poor when the penis is erected, but it is more flexible.Because the penis head has no diaphragm, urethral sponge body, and penis head only expansion during erection, it will not provide the hardness when the penis sponge body has a thick white film, so the penis head is at erection.It is also very soft.
Some men blame the reasons for the dissatisfaction between the two sides on the penis's head, and even say that the past has always been hard, and it is not hard now. This is a misunderstanding.Acknowledge the differences between the diaphragm and internal structure between the penis sponge body, the urethral sponge body and the head of the penis, you can understand their functional differences and different performances in the erectile.
(Editor in charge: Doudou)
