Menu Close

Where do sperm cells acquire their motility and their fertilizing capacity?

Where do sperm cells acquire their motility and their fertilizing capacity?

The epididymis is a complex organ where spermatozoa acquire motility and ability to fertilize the egg. Epididymal maturation lasts 1 or 2 weeks and exposes the immature spermatozoa to a sequentially modified milieu, promoting intense interactions with secretions by the epididymal epithelium.

What allows sperm to motile?

The tail of the sperm – the flagellum – confers motility upon the sperm, and has three principal components: a central skeleton constructed of 11 microtubules collectively termed the axoneme and similar to the equivalent structure found in cilia. a thin cell membrane covering the axoneme.

Are sperm motile in the epididymis?

Spermatozoa in the unobstructed testis are not motile and are incapable of fertilizing ova. Spermatozoa become functional gametes only after they migrate through the epididymis and undergo an additional maturation process, thereby acquiring the capacities for both progressive motility and fertility.

What kind of sperm is best for pregnancy?

Quantity. You’re most likely to be fertile if your ejaculate — the semen discharged in a single ejaculation — contains at least 15 million sperm per milliliter. Too little sperm in an ejaculation might make it more difficult to get pregnant because there are fewer candidates available to fertilize the egg.

Can you conceive without motile sperm?

Similarly, rare non-motile sperm can appear in the ejaculate 1 or more years after vasectomy with no increased risk of failure (pregnancy or motile sperm). Therefore, repeat semen testing in men with rare non-motile sperm is unnecessary because pregnancy is very unlikely to occur in this setting.

What is the best medicine for sperm motility?

Clomiphene citrate is an estrogen blocker. When men take it in oral form, it triggers the pituitary gland to make more luteinizing hormone (LH) and follicle stimulation hormone (FSH). A higher-level of these two hormones can improve sperm count, morphology and motility.