Nervous System

Reference: BD Chourasia’s human anatomy/7th/vol-4/P-129

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

Dura mater also known as pachymenix/menix fibrosa/tough mother(latin)

Arachnoid and pia mater together called leptomeninges

Vestibulocochlear nerve is originated from PM junction.

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

Refractive Media of the Eye:
From before backwards, these are
1. Cornea
2. Aqueous humour
3. Lens
4. Vitreous body

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

Filum terminale is a thin fibrous cord form by pia mater

The most abundant type of cortical neurons are the pyramidal cells. About two thirds of all cortical neurons are pyramidal. Their cell bodies are triangular, with the apex generally directed towards the surface of the cortex.

Reference-BD Chaurasia’s/7th/vol-4/p-174

*** The term dominant hemisphere refers to the side concerned with the perception and production of language/ speech. According to this concept, the left hemisphere is dominant in over 90 of people.

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.

Anteriorly, the sclera becomes continuous with the cornea at the corneoscleral junction (also called sclerocorneal junction or limbus).

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.

Nerves directly related to humerus
Three nerves are closely related to the humerus and susceptible to injury following fracture/dislocation of the corresponding parts
a. Axillary nerve around the surgical neck
b. Radial nerve in the radial/spiral groove
c. Ulnar nerve behind the medial epicondyle

[Ref. BD Chaurasia 4th Vol.]