Lips are primarily composed of muscle, specifically the orbicularis oris muscle, which surrounds the mouth. This muscle allows for a wide range of facial expressions and movements, including speaking, eating, and kissing. While muscles form the bulk of the lips, they also contain a layer of fat beneath the skin, which contributes to their fullness and shape.
Here's a breakdown:
- Muscle: The orbicularis oris muscle is responsible for the lips' movement and flexibility.
- Fat: A layer of fat beneath the skin provides fullness and contributes to the lips' shape.
The fat present in the lips is distinct from the superficial fat found in the skin. It's deeper and lies beneath the muscle, playing a crucial role in lip volume and aesthetics.
In summary: Lips are primarily made up of muscle, but they also contain fat that contributes to their shape and fullness.
