What are cranial nerves 1 2 and 7?

Cranial nerve I, the olfactory nerve, is responsible for the sense of smell. Cranial nerve II, the optic nerve, transmits visual information from the retina to the brain. Cranial nerve VII, the facial nerve, controls muscles of facial expression, conveys taste sensations from the anterior two-thirds of the tongue, and is involved in the secretion of saliva and tears. Together, these nerves play crucial roles in sensory and motor functions.