Facial Muscles and Their Functions in Expression and Mastication

The video tutorial covers the muscles of facial expression and mastication, explaining their roles in showing emotions and aiding in chewing. It details the oral, orbital, nasal, auricular, forehead, and neck muscle groups, highlighting specific muscles like the orbicularis oculi and masseter. The tutorial also discusses the functions of these muscles, such as smiling, frowning, and moving the jaw.

What is the primary function of facial expression muscles?

• To help in chewing food

• To show emotions

• To support the skull

• To aid in breathing

Which muscle is known for puckering the lips?

• Zygomaticus major

• Orbicularis oris

• Levator labii superioris

• Orbicularis oculi

Which muscle is nicknamed the 'Elvis muscle'?

• Levator labii superioris

• Mentalis

• Levator anguli oris

• Zygomaticus minor

What is the role of the orbicularis oculi muscle?

• To lift the upper lip

• To close the eyelids

• To wrinkle the forehead

• To move the ears

Which muscle helps in flaring the nostrils?

• Depressor septi nasi

• Corrugator supercilia

• Nasalis

• Procerus

What is the function of the frontalis muscle?

• To move the ears

• To wrinkle the forehead

• To close the mouth

• To lift the mandible

Which muscle is responsible for creating big neck wrinkles when tensed?

• Platysma

• Buccinator

• Masseter

• Temporalis

Which muscle is the strongest in the mastication group?

• Lateral pterygoid

• Medial pterygoid

• Masseter

• Temporalis

What is the role of the lateral pterygoid muscle?

• To close the mouth

• To retract the mandible

• To align the temporomandibular joint

• To lift the mandible

Which muscle assists in pushing food towards the teeth?

• Buccinator

• Masseter

• Zygomaticus major

• Temporalis