Sperm change how they swim in response to different conditions in the vaginal tract. The ability to adjust to these conditions could be a measure of spermIf this is shown in future research, the most adaptable sperm could one day be selected for fertility treatments to maximise the chance of conceiving.
After vaginal intercourse, mucus secretion into the fallopian tubes intensifies, she says. This stimulates fluid movement in the vaginal tract, making it more viscous.separately considered factors such as the sperm’s shape and the viscosity and flow of the fluid they swam through, says Yazdan Parast. To better understand the collective conditions sperm face, she and her colleagues wanted to study these factors together.
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