Muscles of facial expression

The video tutorial explores the muscles of facial expression, explaining how they attach to the skin and contribute to various facial expressions. It covers specific muscles such as the frontalis, orbicularis oculi, nasalis, zygomaticus, buccinator, orbicularis oris, and platysma, detailing their functions and anatomical positions. The tutorial also touches on the embryonic development of these muscles and their clinical significance.

What is the primary function of the muscles of facial expression?

• To attach to the deep surface of the skin and create expressions

• To aid in digestion

• To move the bones of the face

• To support the skull

Which muscle is responsible for wrinkling the forehead?

• Frontalis

• Orbicularis oculi

• Zygomaticus

• Nasalis

What is the function of the orbicularis oculi muscle?

• To open the mouth

• To close the eyes

• To flare the nostrils

• To tense the cheeks

Which muscle is known as the 'smiling muscle'?

• Platysma

• Buccinator

• Zygomaticus

• Orbicularis oris

What is the role of the buccinator muscle?

• To close the mouth

• To tense the skin of the neck

• To wrinkle the forehead

• To tense the cheeks and assist in chewing