Sperm and Oxygen
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So we learnt about how the Mid piece of a sperm cell contains many mitochondria to enable the movement of the flagellum. What i wanted to know is where does the sperm cell get the oxygen from to make more ATP?
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The truth is that sperm is almost never exposed to oxygen. When you have an *********** the sperms stored in the seminal vesicles are added to the white fluid that is the secretion of the prostate gland, creating "semen". They are just a tiny proportion of the total volume, and so they are living totally immersed in a nutrient fluid that protects them from the outside world. As far as I know they are able to tolerate the oxygen that diffuses into the semen during the short trip into the vagina.
I have read that there are also recorded cases where the guy has ejaculated on his partner's body, just outside the vagina entrance, but still the sperms have still been able to swim their way into it and impregnate the girl. For tiny sperms, that's a long, long way! Luckily this doesn't seem to happen often.