There are 12 cranial nerves, each with their own specific functions. Here's a list of the cranial nerves and their general actions:

1. Olfactory nerve - responsible for the sense of smell
2. Optic nerve - responsible for vision
3. Oculomotor nerve - controls most of the eye's movements, including constriction of the pupil and focusing the lens
4. Trochlear nerve - controls the superior oblique muscle of the eye, which moves the eye downward and outward
5. Trigeminal nerve - responsible for sensation in the face, as well as chewing movements
6. Abducens nerve - controls the lateral rectus muscle of the eye, which moves the eye outward
7. Facial nerve - controls facial expressions, taste sensation in the front of the tongue, and tear and saliva production
8. Vestibulocochlear nerve - responsible for hearing and balance
9. Glossopharyngeal nerve - controls taste sensation in the back of the tongue, swallowing, and saliva production
10. Vagus nerve - controls many organs in the body, including the heart and digestive system
11. Accessory nerve - controls movement of the neck and shoulders
12. Hypoglossal nerve - controls movement of the tongue.