Where is postganglionic sympathetic cholinergic innervation found?

Match the following:

Column-$I$	Column-$II$
$(a)$ Unipolar neurons	$(1)$ Amygdala and Hippocampus
$(b)$ Limbic system	$(2)$ Centre for control of body temperature
$(c)$ Hypothalamus	$(3)$ Embryonic stage

Explain the following processes:
$(a)$ Polarisation of the membrane of a nerve fibre
$(b)$ Depolarisation of the membrane of a nerve fibre
$(c)$ Conduction of a nerve impulse along a nerve fibre
$(d)$ Transmission of a nerve impulse across a chemical synapse

Melanin and Lewy bodies occur in the neurons in case of

Distinguish between (Any four):
$(a)$ Afferent neurons and Efferent neurons
$(b)$ Impulse conduction in a myelinated nerve fibre and an unmyelinated nerve fibre
$(c)$ Aqueous humour and vitreous humour
$(d)$ Blind spot and Yellow spot
$(e)$ Cranial nerves and Spinal nerves

Neural system and computers share certain common features. Comment in five lines.