Nervous System ~ Histology

Question 1

Neurites (neuronal processes) of the neurons constitute

Answer 1

Dendrites & Axon

Question 2

The nissl-free zone of a neuron from where an axon arises is called the

Answer 2

Axon hillock

Question 3

Mesaxon refers to

Answer 3

The area where the plasma membrane of the Schwann cell fuses with itself around the axon

Question 4

Aggregates of polyribosomes and RER

Answer 4

Nissl bodies or granules

Under light microscope ~ appear basophilic granules

Question 5

Staining of myelin on H&E stain

Answer 5

Fails to colour the myelin (shows white region / empty space around nerve fibre)

Question 6

Neurofibrils refers to

Answer 6

Thread like substance permeating the cytoplasm

Question 7

Stellate cells are Aka

Answer 7

Granular cells

Question 8

Layers of cerebral cortex

Answer 8

Molecular layer (Plexiform Layer)
External Granular
External Pyramidal
Internal Granular
Internal Pyramidal (Ganglionic Layer)
Multiform layer

Question 9

Molecular layer of cerebral cortex has

Answer 9

Horizontal fibres + Supporting cells of cajal

Question 10

Where you see the outer band of baillarger

Answer 10

Internal Granular Layer

outer band of Baillarger ~ is heavily myelinated horizontal fibers

Question 11

Inner band of Baillarger is present in

Answer 11

Internal pyramidal layer

Question 12

Layer of cortex (cerebral) contain all the cells

Answer 12

Multiform / Pleomorphic Layer

Question 13

Arrangement of layers in sensory cortex

Answer 13

Granular layer > Pyramidal Layer

Question 14

Arrangement of layers in Motor cortex

Answer 14

Pyramidal Layer > Granular Layer

Question 15

Radio Opaque Structure in pineal gland (on lateral view X-ray)

Answer 15

Corpora arenacea

Question 16

C Cells are called

Answer 16

ParaFollicular cells