Almost all people know what an erection, or the excitement of the penis.But few who are aware of the term "detumescence".It is believed that without an erection can not be a normal sexual intercourse.This statement is undeniable, but of great importance to the sexual contact has detumescence.Various diseases in men not only cause erectile dysfunction (impotence), but also to the pathological detumescence or its absence.
detumescence (from the Latin word detumesco - termination swelling) - is to stop the decline of erection or erection - what hinders and what helps a man to be a man after ejaculation and orgasm.In men after a certain period of time, which lasts from a few seconds to a few minutes after orgasm and ejaculation the penis softens, its voltage drops, it loses its elasticity, which makes it impossible to continue intercourse.Some men, mainly young people who are sexually arousing and erotic environment, detumescence may come much later (10-20 minutes or more),
mechanism of erection
penis consists of two cavernous or erectile bodies that represent the two cylinders located on the outside.Under the corpora cavernosa is a spongy body, turning into the glans penis.The blood supply to the penis is well developed, which plays a role in the occurrence of an erection.Cavernous and spongy bodies have their own arteries that supply blood to the penis, and the veins that drain blood occurs.Vienna begin at the central portions of the corpora cavernosa, which are contained in the body of the penis.Thus, the penis by its structure resembles a sponge.With this device the blood supply to a member of the blood in the corpora cavernosa may be delayed, resulting in their compaction during erection.
relaxation of smooth muscles of the walls of the arterioles and the corpora cavernosa occurs under the action of nerve impulses coming from the peripheral (autonomic) nervous system during sexual arousal.As a result, the arterial bed of the penis expands and increases intracavernous pressure (due to the expansion of the arteries that carry blood to the cavernous and spongy bodies and narrowing of the veins carrying blood flow).The increase in blood volume in the cavities causes compression of the venous plexus, which violates the venous outflow.It is a vascular factor in erection (tense and hard penis).Maintaining an erection is carried accumulation of blood in the cavities and stress.The rest of the penile tissue, except the skin, do not get enough blood supply (ishemiziruyutsya).It is fraught with certain problems during prolonged intercourse.
also in the process of erection plays the role of the perineum muscle tension that causes an additional compression of the base of the penis.
mechanism of detumescence
detumescence directly opposed to an erection.Detumescence occurs due to ejaculation and stopping sexual stimulation or intercourse.Starting detumescence is associated with activation of the nerve fiber plexus, and then into the cavernous body stand neurotransmitters such as noradrenaline, neuropeptide Y and endothelin.Neurotransmitters again cause spasm of smooth muscles of cavernous bodies and arterioles, which causes processes that are opposed to the erection.
outflow of blood from the penis is much more intense than the inflow (erection).There is the elimination of excess blood drop intracavernosal pressure and swelling disappears Prevention and treatment of edema - it is important to understand the root cause of erectile tissue.Arterioles and capillaries return to their original condition and take the form of spirals and corkscrews.Detumescence process occurs in two stages.During the first phase of the penis is reduced by about half their size during arousal.After a few minutes (time depends on the individual characteristics of men) the penis comes into a state of total relaxation.