File:His1897 fig01.jpg

Fig. 1. Photographic reproduction of black-board drawing made by Prof. His for his Lecture

B. Diagrammatic representation of early condition of the neural tube, showing the manner in which it becomes bent on itself.

A. Diagrammatic representation of a mesial longitudinal section through the head and neck of a human embryo. The brain-flexures and the optic vesicle are seen, and the manner in which the fore-brain is bent around the anterior extremity of the notochord and foregut is indicated. The early heart is shown bulging out in front of the foregut. The different sub-divisions of the brain are marked off from each other by dotted lines.

In both diagrams (A as well as B) a dotted line running in the long axis of the neural tube indicates the separation of the alar from the basal lamina of the lateral wall.

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Reference

His W. Address upon the development of the brain. (1897) Trans. Royal Acad. Medicine Ireland.

Cite this page: Hill, M.A. (2024, April 27) Embryology His1897 fig01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:His1897_fig01.jpg

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