Nissl's granules are absent in

In the diagram of a multipolar myelinated neuron given below,different parts have been indicated by alphabets. Choose the option in which these alphabets have been correctly matched with the parts they indicate.

Which cells stop dividing after birth?

Which of the following is not found in or a part of myelinated nerve fibres?

Match List $- I$ with List $- II$:

List $- I$	List $- II$
$a$. Multipolar neuron	$i$. Somatic neural system
$b$. Bipolar neuron	$ii$. Cerebral cortex
$c$. Myelinated nerve fibre	$iii$. Retina of eye
$d$. Unmyelinated nerve fibre	$iv$. Spinal nerves

Choose the correct answer from the options given below:

The ..... nerve fibres are enveloped with Schwann cells,which form a myelin sheath around the axon.