Cranial Nerves

Spinal Nerves

1. They arise from brain.

2. They may be sensory, motor or mixed.

3. They are 12 pairs.

4. They may be unbranched or branched.

5. These are not formed by dorsal and ventral roots.

6. They come out formina of skull.

1. They arise from spinal cord except 1st pair which develops from medulla oblongata.

2. They are mixed.

3. They are 31 pairs.

4. They are branched, each gives 3 branches.

5. They are formed by dorsal and ventral roots.

6. They emere out between intervertebral foramina.