Anatomy | Muscles of Facial Expression [Action, Origin, & Insertion]

The video tutorial covers the anatomy and functions of various facial muscles, including the epicranius, temporalis, masseter, orbicularis oculi, orbicularis oris, zygomaticus, and sternocleidomastoid. It explains the origins, insertions, and actions of these muscles, highlighting their roles in facial expressions, mastication, and neck movements.

Which muscle is primarily responsible for moving the scalp backward?

• Orbicularis oculi

• Zygomaticus major

• Epicranius

• Masseter

What is the origin of the occipitalis muscle?

• Zygomatic arch

• Occipital protuberance

• Temporal bone

• Frontal bone

Which muscle is involved in elevating the mandible?

• Frontalis

• Sternocleidomastoid

• Orbicularis oris

• Temporalis

What is the insertion point of the temporalis muscle?

• Zygomatic arch

• Coronoid process of the mandible

• Occipital protuberance

• Epicranial aponeurosis

What is the primary function of the orbicularis oculi muscle?

• Flexing the neck

• Raising the eyebrows

• Closing the eyelids

• Opening the mouth

Which muscle is known as the 'kissing muscle'?

• Temporalis

• Orbicularis oris

• Masseter

• Zygomaticus major

Which muscle helps in squinting?

• Masseter

• Orbicularis oculi

• Orbicularis oris

• Zygomaticus major

Where does the zygomaticus major muscle insert?

• On the skin at the angle of the mouth

• On the temporal bone

• On the occipital bone

• On the mandible

What is the function of the sternocleidomastoid muscle when both sides contract simultaneously?

• Eyebrow raising

• Neck rotation

• Jaw elevation

• Neck flexion

Which muscle is responsible for smiling?

• Frontalis

• Masseter

• Zygomaticus major

• Orbicularis oculi