Thickness isn't important. The thickness of ejaculate can vary a lot. If you drank a lot that day it can be more fluid, or if you've ejaculated frequently in a couple of days it can be more fluid....so it's definitely not weird to have thicker ejaculate. It doesn't affect your fertility.
No. If a woman is infertile, sperm will have no effect on her. Infertile means she cannot get pregnant.
No
It usually does unless the man is infertile.
Not necessarily. The density of the fluid has nothing to do with the amount of sperm. See a doctor - get him to do a sperm count to easy your mind.
thick
No, it doesn't. Your body produces millions of sperm every day, but only one is necessary to fertilise the egg. But there's no way you can tell if you are fertile or infertile by the color or thickness of your semen. Thick semen probably means that it's been a day or two since you last ejaculated. Thin sperm usually means that it's been an hour or two since you last ejaculated.
Yes. The sperm cells themselves can be abnormally shaped, non-motile or otherwise unable to penetrate the egg cell.
No, as per the autopsy report he was still actively producing sperm at the time of his death.
a mature sperm carries 23 chromosomes.
Like a thick liquid.
If sperm enters the female reproductive tract during infertile days, it typically does not result in pregnancy, as there is no egg available for fertilization. Sperm can survive in the female body for several days, but without ovulation, the sperm will eventually die off without achieving fertilization. The timing of ovulation is crucial for conception, making days outside the fertile window less likely to result in pregnancy.
no, if anything it gets thinner.