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At the time of insemination, sperm along with seminal plasma enters in female reproductive tract and the plasma contains fructose for providing the energy to sperm If the fructose follows just EMP pathway (and not further Krebs cycle). Then what's the need of mitochondria. and if it does enters in Citric acid cycle and further performs oxidative phosphorylation, from where does the oxygen comes?

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  • $\begingroup$ Do you think it is anaerobic in the reproductive tract? How do you think the cells of the reproductive tract survive? $\endgroup$
    – bob1
    Commented Apr 19, 2023 at 2:42
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    $\begingroup$ Do you think, the cells of female reproductive tract provide oxygen to spermatozoa, well what makes you think that? I wonder if you are considering the glandular secretions to contain dissolved oxygen (do share the references of your idea if possible) $\endgroup$
    – Mohit J
    Commented Apr 19, 2023 at 2:58
  • $\begingroup$ No, I was thinking more along the lines of where do the cells get there O2 from and why would the spermatozoon be any different? $\endgroup$
    – bob1
    Commented Apr 19, 2023 at 3:44
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    $\begingroup$ Why it wouldn't be different, when a cell is not any association with any tissue fluid, what can be the transporting medium for oxygen from a foreign body of female. $\endgroup$
    – Mohit J
    Commented Apr 19, 2023 at 5:51
  • $\begingroup$ Kindly upvote the question, for a better reach, Purpose is just to get the query solved asap. $\endgroup$
    – Mohit J
    Commented Apr 26, 2023 at 17:17

1 Answer 1

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Glycolysis and oxidative respiration are the main sources of ATP production in a sperm which causes oxygen regulating inside the sperm and makes it capable to move itself in the reproductive tract. But, the nutrients required for the survival of sperm are limited INSIDE THE SPERM.

But, as it enters the reproductive tract, the female body gives all the nourishment required for the sperm to survive, resulting in increased lifespan of the sperm (4-5 days).

Source: Oxidative phosphorylation versus glycolysis: what fuel do spermatozoa use?

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  • $\begingroup$ "which causes oxygen regulating inside the sperm" what does it mean? Kindly clarify the source (precise) of oxygen. $\endgroup$
    – Mohit J
    Commented May 2, 2023 at 10:38
  • $\begingroup$ I wrote "OXYGEN" to make you easily understand the process going on. Actually the sperm doesn't require any external oxygen. It is ATP (Adenosine Triphosphate) the energy source that provides the energy required by the sperm to travel to the ova (or the egg). This is the process of ATP formation: ATP can be formed by 2 processes: oxidative respiration and glycolysis, both of which occur in bovine spermatozoa. Oxidative respiration occurs within the mitochondria, located in the midpiece of the spermatozoon, and results, in the case of glucose, in 36 ATPs being formed per molecule. $\endgroup$ Commented May 4, 2023 at 8:35
  • $\begingroup$ Full Article Source: onlinelibrary.wiley.com/doi/full/10.2164/…. $\endgroup$ Commented May 4, 2023 at 8:39
  • $\begingroup$ You should first understand the question, before jumping to answer it. Read the question asked. $\endgroup$
    – Mohit J
    Commented May 4, 2023 at 11:16
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    $\begingroup$ Wait, What?? "Sperm doesn't require any external oxygen. ATPs are formed by glycolysis and oxidative respiration". Does your theory says oxidative respiration occurs without oxygen?? and the article, it doesn't holds any relevance related to question. $\endgroup$
    – Mohit J
    Commented May 4, 2023 at 11:25

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