1.

Distinguish between: (i) Myelinated Neuron and Non-myelinated Neuron, (ii) Receptor and motor end plate.

Answer»

(i) Myelinated Neuron and Non-myelinated Neuron:

S. NoMyelinated NeuronNon-myelinated Neuron
(i)The axons are covered by lipid rich myelin sheath.The myelin sheath is absent
(ii)Conduction of nerve impulse is faster and called saltatory conductions.Conduction is comparatively slower.
(iii)Action potential occurs only in the nodes of ranvier.Action potential occurs along the nerve fibres.
(iv)Myelinated nerve fibres are found in spinal cord.Non-myelinated nerve fibre is found in autonomous and the somatic neural system.

(ii) Receptor and motor end plate:

S. NoReceptorMotor end Plate
(i)It is a structure of sensory terminal.It occurs at neuromuscular junction.
(ii)On the nerve fibre, there are structures for collecting information which are called receptors.The axon of a neuron ends into a muscle fibre or a gland cell.


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