Question

3. a. Write any two functions of myelin sheath.

മയലിന്‍ഷീത്തിന്റെ ഏതെങ്കിലും രണ്ട് ധർമങ്ങൾ കുറിക്കുക.

b. The speed of impulse will be faster in myelinated neuron than the

non-myelinated neuron. Justify.​

Answer 1

Answer:

Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances.

This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells. If myelin is damaged, these impulses slow down. This can cause diseases such as multiple sclerosis.

Answer 2

Answer:

A)

1. Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances.
2. Myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells.

B) In two axons of the same diameter, a myelinated axon will conduct impulses faster than an unmyelinated one because a. the channels through which ions flow are larger in the myelinated axon, allowing more rapid depolarization.