Understanding My Partner's Fertility
Male Reproductive Organs - Testis, Penis and ProstateMale Reproductive Organs - Testis, Penis and Prostate
When a man ejaculates the prostate gland? contracts and sperm? travels through the vas deferens to the urethra. In the urethra, the seminal vesicles and the prostate gland provides the correct nutrients for sperm and also increase the volume of liquid (semen) surrounding the sperm.
Like all fertility aids, DuoFertility can be very effective in some cases of male infertility and less so in others, so it is important that you have a good understanding of your partner's fertility and any potential problems if you are trying to conceive.
Volume of sperm
The average ejaculation consists of about 2 to 5 ml of semen and contains up to 100 million sperm/ml. But only 100 to 200 sperm will actually survive long enough to reach the egg? in the Fallopian tubes?.
SpermA single sperm (or spermatozoon) is composed of a head, tail and neck. The father’s chromosomes, or genetic material, are contained in the nucleus (in the head). The neck of the sperm contains the mitochondria (in essence, small energy factories of the cell) which provide energy for the sperm to swim (by moving its tail).
Scientific references (Click here)
A stable isotope-mass spectrometric method for measuring human spermatogenesis kinetics in vivo.
Urol. 2006 Jan;175(1):242-6; discussion 246.
Misell LM, Holochwost D, Boban D, Santi N, Shefi S, Hellerstein MK, Turek PJ.
KineMed, Inc., Emeryville, California, USA.
lmisell@kinemed.comPURPOSE: Currently it is thought to take 60 to 70 days to produce and ejaculate human sperm . This estimate is derived mainly from a single older, descriptive, kinetic analysis of sperm atogenesis. We developed a noninvasive method to assess germ cell turnover time accurately in vivo using stable isotope labeling and gas chromatography/mass spectrometry analyses. We confirmed the postulated length of a normal cycle of sperm atogenesis. MATERIALS AND METHODS: A total of 11 men with normal sperm concentrations ingested (2)H(2)O daily for 3 weeks. Semen samples were collected every 2 weeks for up to 90 days. Label incorporation into sperm DNA was quantified by gas chromatography/mass spectrometry, allowing calculation of the percent of new cells present. A cycle of sperm production was determined as the lag time until labeled sperm appeared in the ejaculate. RESULTS: Labeled sperm were detected after a mean +/- SD of 64 +/- 8 days (range 42 to 76). In 1 subject the time lag was 42 days but it was at least 60 in all other subjects. In most subjects plateau labeling in sperm was not attained. In 2 subjects the rise and fall of the labeling curve was steep and reached greater than 85% new cells, suggesting rapid washout of old sperm in the epididymal reservoir. CONCLUSIONS: This direct kinetic assessment confirms a course of sperm atogenesis that is on the shorter side of traditional estimates based on prior analyses. In addition, the variability observed in healthy men suggests that characteristics such as the epididymal reservoir effect may influence the modeling of in vivo sperm atogenesis.
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