Paper - The mammalian spermatozoon
|Embryology - 5 Jun 2020 Expand to Translate|
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Fawcett DW. The Mammalian Spermatozoon. (1975) Dev. Biol. 44, 394-436.
Royal Society London 1677.
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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.
|Fig. 34. Spermatozoa Tail
A - A longitudinal section through the principal piece of a sperm tail, approximally in the plane passing through fibers 2 and 7 or 9 and 4 of the cross-section shown above. The section includes two doublets and one of the central pair of axonemal microtubules, two outer fibers and groups of partially fused ribs of the fibrous sheath.
Cite this page: Hill, M.A. (2020, June 5) Embryology Paper - The mammalian spermatozoon. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_The_mammalian_spermatozoon
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