Paper - The mammalian spermatozoon: Difference between revisions
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'''C''' - A freeze-cleave preparation of the membrane on the side of the minor compartment containing fibers 9, 1 and 2. A double row of large particles runs longitudinally within the membrane overlying fiber number one. A slight thickening of the membrane at this site is evident (at the arrow) in the cross-section shown above. | '''C''' - A freeze-cleave preparation of the membrane on the side of the minor compartment containing fibers 9, 1 and 2. A double row of large particles runs longitudinally within the membrane overlying fiber number one. A slight thickening of the membrane at this site is evident (at the arrow) in the cross-section shown above. | ||
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==1677 Discovery== | |||
Anton van Leeuwenhoek a Dutchman who developed the early compound microscope. In 1677 on examination of his own ejaculate and identified tiny “animalcules” he found wriggling inside. | |||
Royal Society London 1677. | |||
:“''If your Lordship should consider that these observations may disgust or scandalise the learned, I earnestly beg your Lordship to regard them as private and to publish or destroy them as your Lordship sees fit.''” | |||
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Fawcett DW. The Mammalian Spermatozoon. (1975) Dev. Biol. 44, 394-436.
The Mammalian Spermatozoon
Don W. Fawcett
As we approach the three hundredth anniversary of the discovery of the spermatozoon (1677) it seems timely to review what we know of the structure of this fascinating cell. Perhaps no better example could be found of the slow beginnings of biological science and of the rapid recent acceleration in the tempo of discovery resulting from advances in instrumentation.
Fig. 31. A longitudinal thin section of the middle piece of a mammalian spermatozoon The circumferentially oriented mitochondria are cut transversely. Note how closely the celi membrane is apposed to the underlying mitochondria.
1677 Discovery
Anton van Leeuwenhoek a Dutchman who developed the early compound microscope. In 1677 on examination of his own ejaculate and identified tiny “animalcules” he found wriggling inside.
Royal Society London 1677.
- “If your Lordship should consider that these observations may disgust or scandalise the learned, I earnestly beg your Lordship to regard them as private and to publish or destroy them as your Lordship sees fit.”
Cite this page: Hill, M.A. (2024, May 4) Embryology Paper - The mammalian spermatozoon. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_The_mammalian_spermatozoon
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G[