Orbicularis oculi - action: closes eye
Orbicularis oris - action: closes and protrudes lips
Lavator labii superioris - action: raises upper lip
Corrugator supercilii - action: draws eyebrows inferiorly and wrinkled skin of forehead vertically
occipitofrontalis - action: draws scalp anteriorly, raises eyebrows, and wrinkles skin in forehead
reason/mechanism: The swelling of nerves that controls the mentioned muscles
other symptoms: drooling, dryness of eyes, pain behind ears
References:
Tortora, & Derrickson. (2012). Chapter 11: The Muscular System. In Principles of anatomy and physiology (13th ed.).
Mayo Foundation for Medical Education and Research. (2022, May 4). Bell’s Palsy. Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/bells-palsy/symptoms-causes/syc-20370028