The question is somewhat ambiguous as it doesn't specify whether it refers to the volume of semen or the number of sperm. We will address both interpretations.
Semen Volume
A single ejaculation typically contains approximately 2.5-5ml of semen, or roughly 70 ml in total from multiple ejaculations [Quora]. The female reproductive tract can accommodate this volume without overflow.
Sperm Count
A single ejaculation contains millions of sperm. While a large number are deposited at the cervix (around 200 million), only a tiny fraction (approximately 100,000) reach the womb [Reference: 02-Sept-2024]. The exact number a woman's body "holds" is immeasurable, as it's constantly moving through the reproductive tract, with sperm dying off over time. Many factors impact how many survive and reach the egg, including sperm motility, cervical mucus conditions, and the woman's overall health. The female reproductive tract can accommodate the millions of sperm deposited; however, a successful pregnancy only requires the fertilization of a single egg by one sperm [Medical News Today].
In short, there is no limit to the number of sperm a woman can physiologically handle, while the volume of semen is limited by the physical capacity of the vagina and reproductive tract, with typical ejaculation volumes readily accommodated.
