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* '''Acrosome''' - containing enzymes required to digest the zona pellucida. The acrosome develops as a highly modified golgi structure. | * '''Acrosome''' - containing enzymes required to digest the zona pellucida. The acrosome develops as a highly modified golgi structure. | ||
* '''Nucleus''' - containing male haploid genome required to combine with oocyte haploid genome to form diploid zygote. | * '''Nucleus''' - containing male haploid genome required to combine with oocyte haploid genome to form diploid zygote. | ||
* ''' | * '''Neck''' - Centriole and axonema required for spermatozoa movement. | ||
* ''' | * '''Middle piece''' - Mitochondria and annulus required for energy for spermatozoa movement. | ||
* ''' | * '''Principal piece''' - Microtubules required for spermatozoa movement. | ||
{{Human Spermatozoa EM}} | |||
{{Spermatozoa images}} | |||
===Reference=== | ===Reference=== | ||
Latest revision as of 09:55, 17 September 2014
Human Spermatozoa ( transmission electron micrograph)
Montage transmission electron micrograph of a human sperm cell.
The cell has a compact nucleus, conspicuous mitochondria, no endoplasmic reticulum, minimal cytoplasm and a large tail (about 45 μm in length). Superfluous cytoplasm and associated machinery is jettisoned when the sperm emerges from the testis, leaving a 'stripped down', minimalist cell.
- Cell membrane - containing membrane proteins for chemotaxis and binding to the oocyte zone pellucida.
- Acrosome - containing enzymes required to digest the zona pellucida. The acrosome develops as a highly modified golgi structure.
- Nucleus - containing male haploid genome required to combine with oocyte haploid genome to form diploid zygote.
- Neck - Centriole and axonema required for spermatozoa movement.
- Middle piece - Mitochondria and annulus required for energy for spermatozoa movement.
- Principal piece - Microtubules required for spermatozoa movement.
- Human Spermatozoa EM: Image - cap-phase spermatid | Image - elongated spermatid | Image - spermatid | Image - spermatozoa | Image - normal nucleus | Image - nucleus | Image - abnormal nucleus | Spermatozoa Development | Category:Electron Micrograph
- Spermatozoa Images: Spermatozoa BF | Spermatozoon BF | Spermatozoon EM | Spermatozoon EM | Historic drawing | Category:Spermatozoa | Spermatozoa Development | Testis Development
Reference
<pubmed>19678911</pubmed>| PMC: 2736672 | J of Biology
BioMed Central Open Access BioMed Central Open Access license agreement Brief summary of the agreement.
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Barratt et al. Journal of Biology 2009 8:63 doi:10.1186/jbiol167
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| current | 13:24, 5 April 2010 |  | 1,000 × 204 (26 KB) | S8600021 (talk | contribs) | Montage transmission electron micrograph of a human sperm cell. The cell has a compact nucleus, conspicuous mitochondria, no endoplasmic reticulum, minimal cytoplasm and a large tail (about 45 μm in length). Superfluous cytoplasm and associated machine |
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