Mechanisms of ejaculation

Ejaculation is a physiological process that occurs in men while stimulating sensitive areas of the external genitalia, followed by ejaculation and orgasm. It is a reflex act that involves paracentral lobules of the brain, leads to an orgasm and a subsequent reduction of the erection.

With ejaculation, seminal fluid is released along with the secretion of the prostate through the urethra. Ejaculation occurs both in sexual intercourse and in other ways of stimulating the external genitalia. In some cases, ejaculation occurs involuntarily and without stimulation, for example, in a dream. Such a condition in medical practice is called pollute and occurs during adolescence from 14 to 18 years.

mechanism

ejaculation Since ejaculation is difficultReflex act, its mechanism consists of several successive phases: the emission phase and the emission phase. Before the onset of ejaculation occurs release of pre-ejaculate - a colorless liquid that is secreted by the glandular tissue of the prostate gland. Pre-ejaculate is released a little( up to 5 ml).It is characterized by a strong viscosity and no odor. In the future, there are two phases of ejaculation:

1. Emission phase. In this phase, seminal fluid is released from the epididymis to the urethral canal. When the emission phase occurs, the smooth muscle fibers of the seminiferous tubules of the epididymis are contracted. The pressure in them increases, which leads to the movement of semen into the ampullar part of the spermatic ducts. After accumulation in the ampullar part and passage, the semen is mixed with the fluid of the seminal vesicles, a prostatic secret and a liquid of the bulbar glands. This leads to the formation of the final composition of a full-fledged ejaculate.
2. Seed emission. In the ejection phase, the very process of ejaculation from the urethral canal occurs. Rhythmic progressive contractions of the smooth musculature of the bulbosignificant muscle lead to the movement of the sperm into the distal, i.e., terminal section of the urethra and discharge from the penis. Sperm is secreted not in jet, but in several consecutive portions. At the end of ejaculation, an orgasm takes place, which brings a feeling of mental and physical satisfaction. In some cases, orgasm is weak or completely absent, as well as vice versa - orgasm occurs, but ejaculation is absent.

At the end of ejaculation a refractory period occurs. Refractory period - the time during which the achievement of another orgasm is impossible or difficult. Refractory period is a physiological phenomenon and is associated with the features of the nervous system.

Characteristics of ejaculation and ejaculation

There are certain physiological parameters and rates of ejaculation and ejaculation.

Sperm volume

The normal volume of sperm varies from 1.5 to 7 ml .The volume of sperm depends on the individual characteristics of the male body and the frequency of sexual activity. In some cases, the volume increases to 10 ml, which may indicate a prolonged period of abstinence. The maximum volume of ejaculated sperm is formed by 18-20 years, and the decrease in the intensity of ejaculation and volume begins with 40 years. The main function is conception, the man does not lose even in old age.

Sperm quality

To determine the quality of the ejaculate spermogram is used. The spermogram includes the following parameters: the number of spermatozoa, their structure and mobility.

The number of spermatozoa is very variable and depends on the internal and external factors that affect the male body. The number of spermatozoa depends on the local thermal parameters of the testicles( see "What causes overheating of testicles in men?"), Hormonal activity of male sex hormones, concomitant pathology, nutrition and water-salt metabolism.

Reduction of sperm in the ejaculate below the norm is called oligozoospermia, and the absence of spermatozoa in the ejaculate is azoospermia. With a decrease in mobility and activity of spermatozoa, a pathological condition arises - asthenozoospermia. Read on: "How to improve the quality of sperm?".

Satisfaction of

An important indicator of ejaculation is process satisfaction. This parameter depends on the psychological and physical condition of the man. Psychoemotional satisfaction is manifested in the form of orgasm. Orgasm is wavy in character with the strongest peak on the second or third contraction of bulbosignificant muscle and its subsequent subsidence and a decrease in erection.

Pathological conditions associated with ejaculation

Ejaculation disorder is associated with a decrease or increase in the time of onset of ejaculation. From the onset of stimulation of the male genital organs and before the onset of ejaculation, is OK from 5 to 15 minutes , which is the physiological figures for most men. Increase or shortening of this time interval indicates premature or delayed ejaculation.

Premature ejaculation

Ejaculation is considered as an absolutely premature if it occurs immediately after the introduction of the penis into the vagina or with minor stimulation of the erect penis. Relatively premature ejaculation is considered if a man fails to satisfy his partner. In some cases premature ejaculation occurs because of a long period of abstinence( sexual abstinence).

Read: "Treatment of premature ejaculation."

Delayed ejaculation

A condition in which the achievement of orgasm and ejaculation is difficult or even impossible. Factors that lead to pathology, are both somatic, that is, of the physical nature, and psychic. The main role in delayed ejaculation is played by mental factors, for example stress. In diseases of the epididymis or testicles, the volume of the ejaculate can decrease, which also leads to psychological anxiety of the man, reduction of the strength of orgasm and delay in ejaculation.

In rare cases, delayed ejaculation occurs due to damage to the nerve sensory ends of the glans penis or the penis itself. This leads to increased efforts to adequately stimulate and achieve ejaculation and orgasm.

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