File:Human-spermatozoa EM01.jpg: Difference between revisions
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{| | {| | ||
| Cytoplasm and plasmolemma | |||
| Acrosome | | Acrosome | ||
| Nucleus | | Nucleus | ||
| Centriole and axonema | |||
| Mitochondria and annulus | |||
|- | |- | ||
| cell membrane containing membrane proteins for chemotaxis and binding to the oocyte zone pellucida. | |||
| containing enzymes required to digest the zona pellucida. The acrosome develops as a highly modified golgi structure. | | containing enzymes required to digest the zona pellucida. The acrosome develops as a highly modified golgi structure. | ||
| containing male haploid genome required to combine with oocyte haploid genome to form diploid zygote. | | containing male haploid genome required to combine with oocyte haploid genome to form diploid zygote. | ||
| required for spermatozoa movement. | |||
| required for energy for spermatozoa movement. | |||
|} | |} | ||
Revision as of 13:39, 20 April 2013
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.
| Cytoplasm and plasmolemma | Acrosome | Nucleus | Centriole and axonema | Mitochondria and annulus |
| cell membrane containing membrane proteins for chemotaxis and binding to the oocyte zone pellucida. | containing enzymes required to digest the zona pellucida. The acrosome develops as a highly modified golgi structure. | containing male haploid genome required to combine with oocyte haploid genome to form diploid zygote. | required for spermatozoa movement. | required for energy for spermatozoa movement. |
- Links: Spermatozoa Development | Fertilization
Reference
<pubmed>19678911</pubmed>| PMC: 2736672 | J of Biology
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Barratt et al. Journal of Biology 2009 8:63 doi:10.1186/jbiol167
File history
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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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