Why Facial Expression Muscles Contribute to Wrinkles on the Face

The video explores the unique characteristics of facial expression muscles and their role in forming wrinkles. It begins by discussing the integumentary system, detailing the layers of the skin. The video then contrasts how muscles interact with skin in the body versus the face, highlighting the absence of fascia in facial muscles. This structural difference causes facial muscles to pull on the skin, creating wrinkles. The video concludes with a dissection of the zygomaticus major muscle, illustrating its role in facial expressions like smiling.

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