The<unk>  (the fifth cranial<unk> , also called the fifth<unk>  or simply V) is responsible for sensation in the face.  It is similar to the spinal<unk> s C2–S5 that are responsible for sensation in the rest of the body.  Sensory information from the face and body is processed by parallel pathways in the central<unk> us system.
The fifth<unk>  is primarily a sensory<unk> , but it also has certain motor functions (biting, chewing and swallowing).  These are discussed separately.
The etymology of<unk>  is often given as Latin tri (three) + gemini (twins).  However, "three twins" is not the intended meaning.  The Oxford English Dictionary gives the etymology as Latin trigeminus (born three at birth), which in turn derives from tri + geminus (born at the same birth).  This makes a certain amount of sense, since the plural of geminus (gemini) then implies "twins," while<unk>  implies "three parts."
Trigeminal nerve
Vestibular nerve
Abducens nerve
Vestibulocochlear nerve
Hypoglossal trigone
Nasopalatine nerve
Supratrochlear nerve
Cranial nerve nucleus