Bell's palsy is a paralysis of facial muscles caused by damage to the facial nerve which is cranial nerve VII. Its directs the muscles on one side of the face which including those that control eye blinking and closing and face expressions like smiling , speaking.
Cranial nerve are a set of 12 paired nerves in the back of your brain that transfer the electrical signals to the brain, face, neck , and torso. Cranial nerve VII is lower motor neuron lesion.
This nerve is runs from brain stem to through openings in skull to the face and tongue.Its sends information between the brain and the muscles used in facial expression.
To learn more about Cranial nerve here
https://brainly.com/question/14084468
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