1. Medullated nerve fibres have myelin sheath around the axon. This myelin sheath is secreted by Schwann cells.
2. Myelin sheath prevents the loss of the impulse during conduction.
3. Myelin sheath...
Structure:
1. They consist of large number of fasciculi which are wrapped by a connective tissue sheath called epimysium or fascia. Each individual fasciculus covered by perimysium.
2. Each fasciculus in turn...