Adaptation in the function of the superior orbicularis oris muscle.
D000222:Adaptation, Physiological; D000818:Animals; D004576:Electromyography; D005152:Facial Muscles / Q000502:physiology* / Q000503:physiopathology; D006801:Humans; D008046:Lip; D008253:Macaca mulatta; D009058:Mouth Breathing / Q000503:physiopathology; D009129:Muscle Tonus