Question

Nissl granules are mostly present in
A. Axon
B. Cyton
C. Dendron
D. Both b and c

Answer 1

Hint: The nissl’s granules are present in the main cellular body of the neuron as well as the long tube-like extension of the neuron’s cell body.

Complete answer:
Nissl’s granules are the various granules like subcellular bodies that are present in the neurons in the brain. The cyton and the dendrites contain nissl’s granules. The nissl’s granules are stained brown in colour.

Additional Information:
A neuron is a nerve cell with all its branches neuron is formed from the neuroblast.
It is the structural and functional unit of the nervous system and a large centrally placed nucleus with a single nucleolus is present.
Nissl’s granules are small granular bodies that can be seen in the cyton or the cell body of the neuron.
A Barr body is often seen updating against the inner surface of the nuclear membrane of the females. Barr body denotes the extra X chromosome of females that degenerates. It is absent in males.
Dendrons are several short, tapering much-branded processes. The dendrites contain neurofibrils, microtubules, Nissl’s granules and mitochondria. They conduct nerve impulse towards the cell body.
Axon is a very long, cylindrical process of uniform diameter. The axons have neurofibrils and microtubules but lack Nissl’s granules.

So, the correct answer is ‘cyton and dendron both’

Note: Nissl’s granules are stained with basic dyes and they are basophilic in nature.
These are the sites for synthesis of protein in neurons.