NETTER - Neuroscience Flash Cards

Axial Section through the Forebrain:
Dorsal Caudate Nucleus, Splenium
and Genu of the Internal Capsule
1. Frontal lobe
2. Body of the caudate nucleus
3. Septum pellucidum
4. Cingulate cortex
5. Frontal pole of the lateral ventricle
6. Body of the lateral ventricle
7. Parietal lobe
8. Splenium of the corpus callosum
9. Occipital lobe
Comment: The forebrain contains four structures and their
associated pathways that reveal a C-shaped configuration
reminiscent of their neuronal development from the lamina terminalis
(rostral end of the neural tube) with migration from a frontal position
to a more posterior and then caudal and anterior position into the
temporal lobe. These systems are (1) the lateral ventricles that sweep
in a C shape from the frontal pole to the body to the occipital horn,
to the trigone area to the temporal pole. This section reveals the
body; more posterior sections cut through the lateral ventricles in
opposite poles; (2) the caudate nucleus, with its major bulk in the
head, bulging into the frontal pole of the lateral ventricle, its more
slender body revealed in this section, and a small tail that appears
in the temporal lobe near the temporal pole of the lateral ventricle;
(3) the hippocampal formation with its fornix, including the fimbria,
the crura, the body, and the columns that sweep downward in the
frontal lobe to terminate in the hypothalamus and septum; and
(4) the amygdaloid complex and its associated pathway, the stria
terminalis, that also sweeps forward in a C shape to terminate in the
hypothalamus.
Regional Neuroscience See book 13.8B