1. The orbicularis oculi muscles are often examined in patients with facial paralysis. 2. The Lip position would contract the orbicularis oris muscle, resulting in a frown. 3. It is lowered by the depressor labii inferioris muscle and the orbicularis oris borders it inferiorly. 4. Sometimes fibers can be traced to the zygomaticus, or to the margin of the orbicularis oris. 5. Lateral injection into a portion of the orbicularis muscle can elevate the lateral brow to some extent. 6. The orbicularis oculi closes the eye, while the contraction of the levator palpebrae muscle opens the eye. 7. The lip pits extend into the orbicularis oris muscle, ending in blind sacs surrounded by mucous glands. 8. Marginal fibres of the palpebral part of the orbicularis oculi muscle is known as " Riolan's muscle ". 9. "Emys orbicularis " species have become rare in most countries even though they are widely distributed in Europe. 10. In typical form, the lower face, then progresses up to the orbicularis oculi muscle in the eyelid as time progresses.
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