Facial Muscle Functions and Actions

The video tutorial covers the muscles of facial expression, focusing on the buccinator muscle, key facial muscles like the oxto frontalis, orbicularis oculi, and orbicularis orus, and the oral and aural muscle groups. It explains the functions and positions of these muscles, emphasizing the importance of understanding muscle names to remember their roles. The tutorial also highlights the upper and lower oral group muscles, including the zygomaticus and depressor muscles, and concludes with a recap of the key muscles involved in facial expressions.

Which muscle is primarily responsible for puffing up the cheeks and blowing air?

• Orbicularis oris

• Buccinator

• Zygomaticus major

• Levator labii superioris

What is the function of the orbicularis oculi muscle?

• Puffing up cheeks

• Lifting the upper lip

• Pursing the lips

• Closing the eyelids

Which muscle retracts the corner of the mouth?

• Risorius

• Levator anguli oris

• Depressor anguli oris

• Zygomaticus minor

What is the primary action of the zygomaticus major muscle?

• Closing the mouth

• Depressing the lower lip

• Drawing the corner of the mouth upward and laterally

• Opening the nostrils

Which muscle is known as the 'lifter of the upper lip'?

• Orbicularis oris

• Depressor labii inferioris

• Levator labii superioris

• Mentalis

What is the function of the depressor anguli oris muscle?

• Puffing up cheeks

• Depressing the corner of the mouth

• Lifting the upper lip

• Closing the eyelids

Which muscle helps in positioning the lip when drinking from a cup?

• Zygomaticus major

• Mentalis

• Levator anguli oris

• Risorius

What is the role of the auricularis posterior muscle?

• Closing the eyelids

• Elevating the ear

• Pulling the ear backwards

• Pulling the ear upwards and forwards

Which muscle group is responsible for elevating the ear?

• Orbicularis oculi

• Auricularis superior

• Auricularis anterior

• Auricularis posterior

What is the significance of understanding the meaning of muscle names?

• It is not important

• It makes the names shorter

• It helps in memorizing their positions and functions

• It only helps in pronunciation