Which of the following is true regarding the corneal reflex?
A)The trigeminal nerve is its motor arm,carrying pain information.
B)CN VII is the motor arm of the reflex causing tearing and blinking.
C)The facial nerve is the sensory arm of the reflex.
D)CN VII carries pain signals from the cornea to the brain.

Question

Quizplus · Accepted Answer

The corneal reflex involves the trigeminal nerve as the sensory arm, detecting the stimulation of the cornea, and CN VII as the motor arm, causing both blinking and tearing. Therefore, option B is the correct choice. Option A is incorrect as the trigeminal nerve is the sensory arm, and it carries both sensation and pain information from the cornea. Option C is incorrect as the facial nerve is the motor arm, not the sensory arm, and it carries motor fibers, not sensory fibers. Option D is incorrect as CN VII does not carry pain signals from the cornea to the brain.

Which of the Following Is True Regarding the Corneal Reflex