Understanding penis from anatomy viewpoint

Understanding penis from anatomy viewpoint The male penis has been called the executive organ of sexual behavior by Professor Freud, a pioneer of Austria sexology and human sexuality research. In the art and literature of the past, people gave the penis so much respect, praise and slander. Many reproductive myths have influenced human culture, behavior, biology and medicine.

In order to understand why the penis erects, it need to start with the anatomy of the penis.

The penis consists of 3 long cavernous bodies, including 2 corpus cavernosumlocated on the back and 1 urethra bodies located on the ventral side (urethra through). The corpus cavernosum is an erectile tissue, especially the smooth muscle of the cavernous sinus and the arterial wall. Wrapped around the penis from the outside to the inside in the superficial fascia, are penis skin tissue, deep fascia and tunica albuginea penis. In order to effectively play the role of the fascia must have high hardness and axial force in the penile erection, and become soft and weak in penile none erection. Furthermore, these fascial layers must be symmetric extension and increase the diameter and form a straight erection.

The tunica albuginea is with complex structure, the inner fiber is with ring shape, but the outer layer is longitudinal. A healthy albuginea collagen fiber is closely related to its underlying elastic fibers, in order to carry out the normal strong sexual response and soft. A multi-layered fascia arrangement allows a layer of fascia to slide on the other layer, so that it can prevent venous blood flow during erection. Under normal circumstances, this blocking mechanism and smooth muscle trabecular and small artery relaxation is carried out at the same time, so as to make a large number of arterial blood flow, the corpus cavernosum expansion, so that the white membrane under the small veins. In addition, the albuginea fascia slides each other to make the vein occlusion and reduce the venous blood flow of the penis and helps to form a completely hard erection.

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Three major factors contribute to secondary persistent erections

Three major factors contribute to secondary persistent erections The persistent erection of the penis is harmful to the reproductive health of men and affects the normal life of the patient. If the duration is not that long, there will be no obvious discomfort. If the duration is too long, the arteries of the corpus cavernosum continue to expand, but the vein is persistent contraction, and ultimately affect the blood supply of the penis, then the penis will be swelling, pain and dysuria, lumbosacral soreness, fatigue and other symptoms, frequent spermatorrhea.

It is generally believed that the penile erection more than 6 hours, which will form a blood clot in the cavernous body of the penis, causing penis induration and erection bent. If such situation lasting for a long time, it will finally influence erectile function, cloggy sexual life, some may cause an irreversible impotence or erection dysfunction. In life, the patient will feel ashamed to stand up before other people. In the psychological fear of genital burst, lost the future sexual function.

There are primary and secondary types of persistent erections. At present, the cause of primary persistent erections is unknown. Secondary type causes of persistent erections are from organic, drug, and psychological factor.

(1) Organic factors

There are enough clinical data to prove that some diseases are the cause of persistent erections.

Such as thrombophlebitis, spinal cord injury, leukemia, metastatic malignant tumor, sickle cell anemia, partial injury of penis and so on. In recent years, there have been cases of persistent erection of the penis in rabies patients. Expert analysis, this may be the role of rabies virus in the control of small penis pelvic nerve and hypogastric nerve.

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Why male genitals appear obvious veins?

Why male genitals appear obvious veins? Mike inadvertently found that there are many obvious veins in the scrotal skin which like earthworms. Especially in the hot time when the scrotum laxity, the veins revealed more clearly. Through the thin skin, these veins look like to be splitting, which worried a lot by Mike. What is the blue veins on the scrotum?

The scrotum is the place where the testes are held, and it expands and contracts as the temperature changes to maintain the best temperature for the sperm production. The nutrition supply transport of the testis is composed of testicular artery, and the related veins take the responsibility of the blood flow back, plus a semen delivery pipe which is called deferens, and this three pipes joint is wrapped into a cord like structure called the spermatic cord. When the spermatic vein have the occurrence of dilated and tortuous for some reason, scrotum, and your scrotum will appear some obvious veins. Medically, it is called varicocele.

When the human body is in standing state, the arterial blood flows from top to bottom, making it easy and natural. The blood flowing from the bottom back is not so smooth. As the blood is attracted by the earth’s gravity, it is very arduous and slow to flow from bottom to top.

"Water flows downwards," which is a law of nature. If you want to make water to flow from down to up unless it is powered by a pump. The veins do not have such modern devices installed, but rather rely on the contraction of the walls of the blood vessel to compress the blood and propel the blood from the lower to the upper. This intensity is very limited, and they must be transported step by step. To prevent the flow of blood return, there is a special structure in the vein called the vascular flap. The valve has a single direction limiting function, that is, it allows the flow of blood from with a single direction. The vein blood vessel uses the blood vessel valve function, realized the blood to flow upward from the bottom.

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Prolonged erection leads to impaired sexual function

Prolonged erection leads to impaired sexual function Nowadays men often talk about the duration of their erections which is longer the better, but they don’t know that prolonged erections can lead to impaired sexual function. So you should keep this in your mind that the longer, is not the better. Experts say men should not take aphrodisiac drugs in order to pursue longer lasting effects. Only the widely used and tested brand and type can within your choice list, such as below male enhancement products within this fascination review summary contents.

The classic case: a man takes impotence drugs lead to genital erection for 7 days

Case 1: Mr. Huang, who is more than 30 year old, took an unknown "special effect" aphrodisiac, sustained his genital erection for 7 days, resulting in prolonged genital congestion and near necrosis.

Case 2: Mr. Li bought a local "special effects" aphrodisiac through one of his friend’s introduction. Mr. Li will take some medicine before each sexual intercourse. It is said that the effect is obvious. Two weeks later, one night after taking the medicine, he got up on the second morning and found himself in an erection. At first he was pleasantly surprised, but in the afternoon the situation was still under erection and the genitals began to pain. As a result of embarrassment, Mr. Li has not been to the hospital for treatment, only in the family with ice cold compress. Until seven days, he really cannot stand for this situation, then to seek medical advice from the hospital.

The doctor said that, finally, Mr. Li accepted a flat angiography machine under the artery embolization, the artery leading to the diseased part of the plug to stop the blood flow to the arteries of the genitals, then his penis finally dropped down.

The normal erection occurs after sexual stimulation caused by sexual impulse, but if the penis has erection and last for more than 4 hours without any sexual urges or sexual desire, which can be defined as a kind of morbid. The clinical incidence of genital priapism rate is about 1/100000. It has lasted for more than 140 hours, like Mr. Li, has rarely been reported word wildly.

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Normal ultrasound result of the penis

Normal ultrasound result of the penisOne. The longitudinal section of the urethra is a thin line with a lower level of echo, located in the urethra sponge. Urethral contrast radiography (inject saline or lidocaine solution) can make the whole urethral wall shows smooth and clear, resulting the line tall echo.

Two. the longitudinal section of the corpus cavernosum is a banded structure with an orderly border, and the inside is a medium level, uniform, dotted echo. The long axis of the deep artery of the penis is parallel, thin and high echo. It shows the clearest when erect.

Three. Measure the normal value of the deep penile artery

(1) Diameter: under relaxation condition, the diameter of deep penile artery was 0.3 – 0.8mm, with an average of about 0.5 + 0.1 mm. After injection of vasodilator 5 min, the diameter of vessel was >0.7 ~ 0.8 mm;

(2) Doppler spectrum parameter

2.1, under relaxation condition, the peak systolic velocity was VSP 10-15 cm/sc, and VSP >35 cm/s after injection, and it can up to 60 cm/s for Max.

2.2, resistance index (RI): under relaxation condition, the RI value was about 1.0. After injection, the RI<1.0 began to increase due to the presence of diastolic blood flow, and the resistance index gradually increased. When the penis expands, as VSP increases, RI gradually approaches 1.0.