Which cranial nerves are referred to by the abbreviation CN II-XII?

The abbreviation CN II-XII refers specifically to cranial nerves numbered from 2 to 12. This range includes the optic nerve (CN II) through to the hypoglossal nerve (CN XII). These cranial nerves are responsible for various sensory and motor functions essential for activities such as vision, facial sensations, and movement of muscles in the neck and face.

Cranial nerve I, the olfactory nerve, is excluded from this abbreviation, which is why the focus is on the nerves listed from II to XII. Understanding the numbering and functions of these cranial nerves is essential in fields like neurology and medicine, as each plays vital roles in the overall functionality of the nervous system.