File:GladstoneHamilton1941 text-fig01.jpg: Difference between revisions
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==Text-fig. 1.== | |||
AOBD is an ellipse representing the outline of an embryonic disc in which it is assumed that the primitive streak and groove occupy the lower half of the major axis of the ellipse, and that the serial sections have been cut at right angles to the major axis. A’0’B’D’ represents an embryonic disc of corresponding size and form the sections of which have been cut at an angle of 30° with the major axis of the ellipse. The maximum length of the disc, if calculated from the number and thickness of the sections which include the major axis, would be shortened by 0-22 mm. and the primitive groove would also be proportionately shortened by 0-11 mm. Y in the interrupted line X Y Z represents the position in which the primitive groove would appear in relation to the edges X, Z of the embryonic disc ina section cut in the position which is indicated in the figure. | |||
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{{Ref-GladstoneHamilton1941}} | {{Ref-GladstoneHamilton1941}} | ||
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[[Category:Carnegie Embryo 1399]] | |||
Latest revision as of 16:25, 26 February 2017
Text-fig. 1.
AOBD is an ellipse representing the outline of an embryonic disc in which it is assumed that the primitive streak and groove occupy the lower half of the major axis of the ellipse, and that the serial sections have been cut at right angles to the major axis. A’0’B’D’ represents an embryonic disc of corresponding size and form the sections of which have been cut at an angle of 30° with the major axis of the ellipse. The maximum length of the disc, if calculated from the number and thickness of the sections which include the major axis, would be shortened by 0-22 mm. and the primitive groove would also be proportionately shortened by 0-11 mm. Y in the interrupted line X Y Z represents the position in which the primitive groove would appear in relation to the edges X, Z of the embryonic disc ina section cut in the position which is indicated in the figure.
Reference
Gladstone RJ. and Hamilton WJ. A presomite human embryo (Shaw) with primitive streak and chorda canal with special reference to the development of the vascular system. (1941) Amer. J Anat. 76(1): 9-44.
Cite this page: Hill, M.A. (2024, April 16) Embryology GladstoneHamilton1941 text-fig01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:GladstoneHamilton1941_text-fig01.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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