four haploid cells.
Continuously
the secondary spermatocyte
It happens around the clock, with hundreds of millions of sperm produced daily.
No. The only thing that it has is the nucleus in a head, an acrosome on the head so it can enter the egg, mitochondria to drive the flagella. Only the nucleus enters the egg and that is all it contributes to the zygote.
The scrotum needs to be able to move away from the body and closer to it depending on the need for heat. If your body is to hot the sack will expand and move away from your body and if it becomes to cold it will tighten and move into your body. This is all done with sperm production in mind as if its too hot or cold the sperm will die.
LH, or luteinizing hormone, stimulates the Leydig cells in the testes to produce testosterone. Testosterone plays a critical role in maintaining male reproductive function, including sperm production and development of secondary sexual characteristics.
Coming from a fellow guy like me, it depends. You can sperm (cum) in a minute or you can last for ten(like me) but I believe it depends on the guy and I also think it depends how big his dick is. Mine is 7 inches.
they can occur any where it has to occur with precipitation
When and where did the dustbowl occur
of Occur
How did the abacus occur?
"When does Hemoconcentration occur?"