Spermatid
| Spermatid | |
|---|---|
testis of a rat. × 250. | |
| Identifiers | |
| MeSH | D013087 |
| FMA | 72294 |
| Anatomical terminology] | |
The spermatid is the
, each spermatid contains only half of the genetic material present in the original primary spermatocyte.Spermatids are connected by cytoplasmic material and have superfluous cytoplasmic material around their nuclei.
When formed, early round spermatids must undergo further maturational events to develop into
The spermatids begin to grow a living thread, develop a thickened mid-piece where the
In 2016 scientists at
DNA repair
As postmeiotic germ cells develop to mature sperm they progressively lose the ability to repair DNA damage that may then accumulate and be transmitted to the zygote and ultimately the embryo.[2] In particular, the repair of DNA double-strand breaks by the non-homologous end joining pathway, although present in round spermatids, appears to be lost as they develop into elongated spermatids.[3]
Additional images
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Scheme showing analogies in the process of maturation of thespermatozoa)
.svg)
See also
List of distinct cell types in the adult human body
References
External links
- Histology image: 17804loa – Histology Learning System at Boston University - "Male Reproductive System: testis, early spermatids"
- Histology image: 17805loa – Histology Learning System at Boston University - "Male Reproductive System: testis, late spermatids"
- Histology at okstate.edu