CNS Structures

Molecular layer (plexiform layer). This is the most superficial layer; It consists mainly of a dense network of tangentially oriented nerve fibres. These fibres are derived from the apical dendrites of the pyramidal cells and fusiform cells, the axons of the stellate cells, and the cells of Martinelli.

Pons, Cerebellum, Medulla oblongata-parts of hind brain.

Reference-BD Chaurasia’s/7th/vol-4/p-139

Two cerebral hemispheres are connected to each other by the corpus callosum & two cerebellar hemisphere by vermis.

Epithalamus includes pineal body, habenular nucleus and posterior commissure.

Reference-BD Chourasia’s/7th/vol-4/p-101

Function:
 Sensory relay station
A vast amount of sensory information of all types (except smell) converges on the thalamus and presumably is integrated through the interconnections between the nuclei. The resulting information pattern is distributed to other parts of the central nervous system.

Foramen of Monro connects Lateral ventricle to third ventricle

*** The corpus callosum is the largest commissure of the brain. It connects the two cerebral hemispheres. It is 10 cm in length in man.

The term basal nucleus is applied to a collection of masses of gray matter situated within each cerebral hemisphere. They are the corpus striatum, the amygdaloid nucleus, and the claustrum.

Hippocampus and olfactory area.

The term basal nucleus is applied to a collection of masses of Gray matter situated within each cerebral hemisphere. They are the corpus striatum, the amygdaloid nucleus, and the claustrum.

[Ref. BD Chaurasia 4th Vol.]