Orbicularis oris is a complex and circular muscle surrounding the mouth, pivotal for actions such as puckering, closing the lips, and contributing to facial expressions. It plays a vital role in articulation during speech and is essential for functions like chewing and swallowing.
The name "orbicularis oris" originates from Latin, with "orbicularis" meaning circular and "oris" referring to the mouth, indicating its form and location.
Without the orbicularis oris, a person would struggle to perform basic tasks like speaking clearly, retaining food and liquid in the mouth, and expressing emotions through facial movements that involve the lips.
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