Orbicularis oris #muscle #Anatomy 👄🗣️ | Dr. Ishtiaque Arafat

286K views · 2.9K reactions | Know your facial muscles, Vol. 4: orbicularis oris, risorius, mentalis, buccinator, depressor anguli oris, depressor labii inferioris. Learn human anatomy fast at Anatomy.app!易 https://anatomy.app #anatomy #medschool #medstudent | Anatomy.app | Facebook

The orbicularis oris is far more complex than it first appears. What injectors need to know: It’s not a simple sphincter, it’s formed from four embryological muscles that converge around the mouth. Function: controls lip movement (narrowing, whistling, speech, expression). Clinical uses for toxin: • Soften perioral lines (upper & lower lip lines). • Lip flip technique – relaxing fibers at the vermilion border can subtly evert the lip for more show. • Creates a gentle pout effect by balancing con