Here i have described about the cranial nerves their function and their supply to respective structures.
1. Olfactory Nerve: It is a type of sensory nerve,

Supply: It supplies to the Olfactory Epithelium(cells)
Function: Perception of smell from the nasal cavity.
2. Optic Nerve: It is a type of sensory nerve,
Supply: Retina (ganglion cells)
Function: Vision of retina.
3. Oculomotor Nerve: [...]