skeletal muscle atrophy abnormal facial muscle morphology facial muscle atrophy 2017-09-18T06:10:38Z acquired diminution of facial muscle tissue associated with wasting as from death and reabsorption of cells, diminished cellular proliferation, decreased cellular volume, pressure, ischemia, malnutrition, reduced function or malfunction, or hormonal changes; occurs with age, immobilization, weightlessness, malnutrition or denervation MP:0030140 atrophic facial muscles atrophic facial muscle MPheno.ontology facial muscle atrophy