1. Frontalis: raising of eyebrows and forming wrinkles
2. Orbicularis oculi: closing of eyelids and assisting in blinking
3. Buccinator: controls the cheekbone; helps with chewing and blowing
4. Platysma: depressing the mandible
5. Zygomaticus major: elevates the corner of mouth; smiling
Mechanism of Muscle Weakness
- Bell's palsy is the result of inflammation or compression of cranial nerve VII. This infllam,ation disrupts the normal transmission of nerve impulses to the facial muscles. Other symptoms are:
1. Difficulty with speech
2, Loss of facial expressions
3. Taste disturbance
4. Headache
5. Changes in salivary production
6. Drooling