What cells are bipolar neurons?

Assertion ($\mathrm{A}$): In myelinated nerve fibres, action potentials are conducted at a faster rate.

Reason ($\mathrm{R}$): The myelin present between nodes of Ranvier has concentrated $\mathrm{Na}$ and $\mathrm{K}$ voltage-gated channels.

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Where are Nissl's granules found and what is their nature?

Which of the following statements is true?

All the following structures are found in an electrical synapse except

The given figure shows the structure of a neuron. Select the option that correctly identifies the parts labelled as A to E.