File:Humphrey1940 fig04.jpg

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Fig. 4. Olfactory and accessory olfactory formations in the 37 mm fetus

Drawings to illustrate the olfactory and accessory olfactory formations in the 37 mm. fetus. Activated protargol preparation.

A, a diagram of a horizontal section through the fetus to indicate the planeof the sections and the location of the detailed drawings which follow. X 3.

B, an enlargement of the more dorsamedial portion of the accessory olfactory formation, the area shown within the dotted lines in figure A. X 30.

C, the accessory olfactory formation on the same side of the brain, as seen in a section 100p. inferior to A and B. X 30.

D, a section through the olfactory formation, 480;: inferior to figure C. X 30.


Humphrey T. The development of the olfactory and the accessory olfactory formations in human embryos and fetuses. (1940) J. Comp. Neurol. 431-468.

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Cite this page: Hill, M.A. (2024, February 26) Embryology Humphrey1940 fig04.jpg. Retrieved from

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