Schwann cells are found around:

Which of the following statements are correct?
$I$. Dendrites are long fibres with branched distal ends.
$II$. Axons are short fibres which arise from the cell body.
$III$. The cell body of a neuron contains cytoplasm,a nucleus with cell organelles,and Nissl's granules.
$IV$. Dendrites transmit nerve impulses away from the cell body to a synapse.
The correct option is:

Which of the following parts of a neuron is covered by a fatty sheath?

The junction between two adjacent Schwann cells in a myelinated nerve fiber is known as:

$A$ neuron is a microscopic structure composed of $.......$ major parts.

Cell bodies or cyton are found in