Question

cranial nerves involved in swallo
an inability to swallow indicates a problem with which nerve?
glossopharyngeal nerve (ix)
olfactory nerve (i)
trochlear nerve (iv)
accessory nerve (xi)

Explanation:

The glossopharyngeal nerve (IX) is involved in the process of swallowing. The olfactory nerve (I) is related to the sense of smell. The trochlear nerve (IV) controls eye movement. The accessory nerve (XI) is mainly associated with the movement of the neck and shoulders.

Answer:

Glossopharyngeal nerve (IX)