Question

mcgraw - hill education
which clinical test could be used to evaluate the function of this cranial nerve?
test the subjects ability to make facial expressions such as smiling, frowning,
and raising their eyebrows.
test the subjects gag reflex and ability to swallow.
test the subjects ability to rotate their head and shrug their shoulders against
resistance.
test the subjects ability to feel pinpricks and hot and cold objects applied to
their face.
test the subjects ability to track moving objects.

Explanation:

The facial nerve (cranial nerve VII) is responsible for motor functions related to facial expressions. Testing the ability to make facial expressions such as smiling, frowning, and raising eyebrows directly assesses the function of this cranial nerve.

• The gag reflex and swallowing ability (second option) are related to the glossopharyngeal (IX) and vagus (X) nerves.
• Rotating the head and shrugging shoulders against resistance (third option) pertain to the accessory nerve (XI).
• Feeling pinpricks and hot/cold on the face (fourth option) is associated with the trigeminal nerve (V).
• Tracking moving objects (fifth option) is related to the oculomotor (III), trochlear (IV), and abducens (VI) nerves.

Answer:

Test the subject's ability to make facial expressions such as smiling, frowning, and raising their eyebrows.