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In human sexuality, the refractory period is usually the recovery phase after orgasm during which it is physiologically impossible for males to have additional orgasms. [1] [2] This phase begins immediately after ejaculation and lasts until the excitement phase of the human sexual response cycle begins anew with low-level response.
After ejaculation, the latter part of the ejaculated semen coagulates immediately, [12] forming globules, [13] while the earlier part of the ejaculate typically does not. [14] After a period typically ranging from 15 to 30 minutes, prostate-specific antigen present in the semen causes the decoagulation of the seminal coagulum. [ 15 ]
The sperm (being one of approximately 250 million sperm in a typical ejaculation) travels through the vagina and cervix into the uterus or fallopian tubes. Only 1 in 14 million of the ejaculated sperm will reach the fallopian tube. The egg simultaneously moves through the fallopian tube away from the ovary.
Keep in mind, though, that waiting too long can decrease sexual desire, increase the chances of premature ejaculation, and reduce the intensity of erections, according to Elist.
The symptoms usually begin within 30 minutes of ejaculation, [5] and can last for several days, sometimes up to a week. [4] In some cases, symptoms may be delayed by 2 to 3 days or may last up to 2 weeks. [9] In some men, the onset of POIS is in puberty, while in others, the onset is later in life. [10]
The human sperm cell is haploid, so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell with 46 paired chromosomes. In mammals, sperm is stored in the epididymis and released through the penis in semen during ejaculation. The word sperm is derived from the Greek word σπέρμα, sperma, meaning "seed".
Ejaculation occurs in two stages, the emission stage and the expulsion stage. [4] The emission stage involves the workings of several structures of the ejaculatory duct; contractions of the prostate gland, the seminal vesicles , the bulbourethral gland and the vas deferens push fluids into the prostatic urethra . [ 3 ]
How long the man has abstained prior to providing a semen sample correlates with the results of semen analysis and also with success rates in assisted reproductive technology (ART). Both a too short period of time since last ejaculation and a too long one reduce semen quality. A period of time of less than one day reduces sperm count by at ...