Mature Sperm

Mature Sperm

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What Does Immature Sperm Mean?

FertilitySmarts Explains Immature Sperm

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Natural conception is when a pregnancy is achieved through sex between a man and a woman. Through intercourse, sperm is able to fertilize an egg in the woman’s fallopian tube, and that fertilized
egg eventually attaches to the wall of the uterus and begins developing into a
fetus. With...
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An immature sperm is a “younger” sperm cell that lacks the characteristic features and functions of mature sperm. An immature sperm is immobile, so it cannot swim through the fallopian tube to reach the egg and does not have the ability to break down the wall of the egg to fertilize it (acrosome reaction). For this reason, men with a relatively high proportion of immature sperm can have low fertility.
An immature sperm is also called a spermatid or sperm precursor cell.
A healthy man is likely to produce about 300 million sperm a day. This occurs through a series of cell divisions and maturation process referred to as spermatogenesis, where spermatids develop into spermatozoa (or mature sperm). The process takes around 64 days on average.
The process involves 4 distinct steps. Spermatids pass through the: golgi, cap phase, acrosomal and maturation phases. During the process, spermatids, which start out as round cells that cannot move, lose their spherical shape and elongate into the 'tadpole' shape, with a long head, midpiece, and a tail.
This process of sperm maturation can be interrupted, leading to the release of immature sperm to the semen. Possible causes include:
This leads to a reduction in the number of mature sperm and therefore decreases the ability of the male to fertilize an egg, causing male infertility.

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By: Kelly Park
| Contributor

By: Kelly Park
| Contributor

By: Kelly Park
| Contributor

By: Kelly Park
| Contributor

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