Nissl Granules are Absent in

Q. Nissl Granules are absent in: 

(a) Axon 

(b) Cyton 

(c) Dendron 

(d) Both (a) and (b)

Nissl’s granules are the big granular bodies that may be seen inside neurons. Granules of Nissl are unique in that they can only be found in the cytoplasm of the cell bodies of neurons.

These granules are rough endoplasmic reticulum that includes rosettes of free ribosomes and are located in the body of the neuron. They are responsible for the synthesis of proteins. The governing component of the neuron is called the Cyton, and it is the cell body of the neuron. It has a cytoplasm, and in the middle of that cytoplasm is a nucleus. The Golgi apparatus, endoplasmic reticulum, ribosomes, mitochondria, and other common organelles of a cell can all be found in the body of the cell, which is called the cytoplasm. The presence of Nissl’s granules in the cytoplasm, which gives the cytoplasm of the cell body a somewhat colder look, is another component of the cytoplasm. Dendrites of neurons are another location where Nissl’s granules can be found. Axons and axon hillocks do not have these components.

Therefore, the correct response is axon.

– Franz Nissl, a German neuropathologist and the creator of the Nissl’s staining procedure, is honored with this technique’s namesake. This approach is helpful in locating the dendrites and cell body of the target cell.

As a result of the fact that Nissl staining pinpoints the location of Nissl granules, cytons and dendrites are stained but axons are not. These granules undergo transformations in response to a wide variety of physiological situations as well as pathological ones.