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.

What makes facial expression muscles unique compared to other muscles in the body?

• They are located only in the limbs.

• They do not contract.

• They are directly attached to the skin.

• They are larger in size.

Which layer of the integumentary system is made of adipose tissue?

• Epidermis

• Dermis

• Hypodermis

• Fascia

How do limb muscles typically attach in the body?

• From skin to bone

• From muscle to muscle

• From one bone to another

• From skin to skin

What is a major factor that contributes to wrinkles from facial expression muscles?

• Muscles do not move in the face.

• Muscles are larger in the face.

• Muscles attach to the skin, creating creases.

• Muscles are absent in the face.

What is the function of the zygomaticus major muscle?

• To frown

• To smile

• To blink

• To chew

Why is dissecting facial expression muscles challenging?

• They are too small to see.

• They are located in the limbs.

• They are deeply embedded in bone.

• They are intertwined with skin layers.

What is the purpose of Botox injections in facial muscles?

• To strengthen bone attachment

• To temporarily paralyze muscles and reduce wrinkles

• To enhance muscle contraction

• To increase muscle size