|Median sagittal section of brain of human embryo of three months. (Lamina terminalis labeled at center left.)|
|Median sagittal section of brain of human embryo of four months. (Lamina terminalis labeled at center right.)|
|Gray's||subject #184 742|
The median portion of the wall of the fore-brain vesicle consists of a thin lamina, the lamina terminalis, which stretches from the interventricular foramen to the recess at the base of the optic stalk.
This is the tip of the embryolical brain in the early weeks of development.
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