Question

clusters of rer and free ribosomes in neurons are called
nissl bodies.
neurofibrils.
microglia.
neurofilaments.
perikaryon.
check answer

Explanation:

Nissl bodies are clusters of rough endoplasmic reticulum (RER) and free ribosomes in neurons. Neurofibrils are bundles of neurofilaments and microtubules. Microglia are a type of glial cell. Neurofilaments are intermediate filaments. Perikaryon refers to the cell body of a neuron.

Answer:

Nissl bodies.