A bit of dust blows into and touches the cornea of the eye. Which of the following is likely to ha ppen?
A) Nothing, because there is no sensory information sent from the cornea.
B) Stimulation of the facial nerve (VII) will be perceived as pain.
C) Stimulation of the optic nerve (II) will cause tears to flow from the lacrimal gland.
D) Stimulation of the ophthalmic division of the trigeminal nerve (V) will cause blinking.

Question

Quizplus · Accepted Answer

Stimulation of the ophthalmic division of the trigeminal nerve (V) will cause blinking. The cornea is innervated by the ophthalmic division of the trigeminal nerve (V), which is responsible for transmitting sensory information related to touch, pain, and temperature from the eye. When a bit of dust touches the cornea, it triggers a reflex blinking response mediated by this nerve to protect the eye from further harm.

A Bit of Dust Blows into and Touches the Cornea