Describe the structure of nerve fibres.

Describe the structure of a nerve cell.

Describe the structure of cardiac muscle fibres.

Name two types of nerve fibres .

Describe the cranial nerves of man.

Bulb like structure where branch of nerve fibre terminates

Explain the following processes: (a) Polarisation of the membrane of a nerve fibre. (b) Depolaristion of the membrance of a nerve fibre. (c ) Conduction of nerver impulse along a nerve fibre. (d) Transmission of a berve impulse across a chemical synapse.

Which statements is not true about nerve fibres in mammals?

Assertion :- Speed of nerve impulse is faster on medullated nerve fibres, than non medulated nerve fibres. Reason:- In medullated nerve fibres nerve impulses are conducted in a saltatory manner.