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==Fig. 4. Diagram of a human spermatozoon== | |||
Special preparations of spermatozoa reveal other details of structure (Fig. 4). The body contains a delicately fibrillated cord, the axial thread, which is continued throughout the tail, narrowing to a point at its terminus. Surrounding the axial thread is a capsule of cytoplasm which, however, does not extend to the tip of the tail, thus leaving the axial thread naked for a short distance. In the body the cytoplasm contains a spiral fiber, perhaps of a mitochondrial nature, winding round the axial filament; other mitochondria also are present. The body contains the centrosome which takes the form of a double structure; one part, the anterior end knob, is attached to the posterior surface of the head close to the nucleus, the other part, the posterior end knob, is situated a little farther back. A derivative of the centrosome, as shown during development of the spermatozoon, is the end ring which marks the boundary between body and tail. | |||
{{ | {{Bailey 1921 Figures}} | ||
[[Category:Human]] [[Category:Spermatozoa]] [[Category:Cartoon]] |
Latest revision as of 22:29, 16 February 2014
Fig. 4. Diagram of a human spermatozoon
Special preparations of spermatozoa reveal other details of structure (Fig. 4). The body contains a delicately fibrillated cord, the axial thread, which is continued throughout the tail, narrowing to a point at its terminus. Surrounding the axial thread is a capsule of cytoplasm which, however, does not extend to the tip of the tail, thus leaving the axial thread naked for a short distance. In the body the cytoplasm contains a spiral fiber, perhaps of a mitochondrial nature, winding round the axial filament; other mitochondria also are present. The body contains the centrosome which takes the form of a double structure; one part, the anterior end knob, is attached to the posterior surface of the head close to the nucleus, the other part, the posterior end knob, is situated a little farther back. A derivative of the centrosome, as shown during development of the spermatozoon, is the end ring which marks the boundary between body and tail.
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Reference
Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.
Cite this page: Hill, M.A. (2024, March 29) Embryology Bailey004.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Bailey004.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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