Question

differentiate between medulate and non medulate nerve fiber

Answer 1

Medullated Nerve Fibres:

1. Collateral nerve fibres are present.
2. They carry impulses faster than non- medullated nerve fibres.
3. Nodes of Ranvier are present at intervals.
4. They appear white in fresh state.
5. They are generally present in the white matter of brain and spinal cord and in cranial and spinal nerves.
6. Medullary sheath is present.

Non-Medullated Nerve Fibres:

1. Collateral nerve fibres are absent.
2. They carry impulses slower than medullated nerve fibres.
3. Nodes of Ranvier are absent.
4. They appear grey in fresh state.
5. They are present in autonomic nerves.
6. Medullary sheath is absent.

Answer 2

Explanation:

Medullated nerve fibre is a nerve fibre with a medullary sheath. Non-medullated nerve fibre is a nerve fibre without medullary sheath. Medullated nerve fibre is also referred to as myelinated nerve fibre. Non-medullated nerve fibre is also referred to non-myelinated nerve fibre.