Abstract
Yuz jag‘ mushaklari inson mimikasi, chaynash faoliyati va umumiy yuz morfologiyasi uchun muhim funksiyani bajaradi. Ushbu mushaklar yillar davomida turli fiziologik, biokimyoviy va morfologik o‘zgarishlarga uchraydi. Maqolada bu o‘zgarishlarning asosiy sabablari, mexanizmlari va klinik ko‘rinishlari yosh guruhlari kontekstida tahlil qilinadi.
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