Quiz on Facial Anatomy and Muscles

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

• To produce facial expressions

• To protect the eyes

• To assist in chewing

• To support the skull

Which nerve supplies all the muscles of facial expression?

• Facial nerve

• Trigeminal nerve

• Vagus nerve

• Optic nerve

What is the action of the orbicularis oculi's palpebral part?

• Firm closure of the eyelids

• Gentle closing of the eyelids

• Opening the eyelids

• Raising the eyebrows

Which muscle is responsible for compressing the cheeks against the gums?

• Platysma

• Orbicularis oris

• Buccinator

• Zygomaticus major

What is the origin of the buccinator muscle?

• Lacrimal crest

• Frontal process of maxilla

• Alveolar margin of maxilla

• Medial palpebral ligament

How does the lacrimal part of the orbicularis oculi contribute to tear flow?

• It closes the mouth

• It raises the eyebrows

• It dilates the lacrimal sac

• It compresses the eyelids

What is the consequence of facial nerve paralysis (Bell's palsy)?

• Inability to close the eye

• Loss of hearing

• Inability to taste

• Loss of facial sensation

Which branch of the trigeminal nerve supplies the skin of the lower eyelid?

• Zygomatic nerve

• Auriculotemporal nerve

• Infraorbital nerve

• Mental nerve

What is the role of the platysma muscle?

• To close the mouth

• To tense the skin of the neck

• To elevate the mandible

• To assist in blinking

If a patient has difficulty closing their eye, which muscle is likely affected?

• Platysma

• Buccinator

• Orbicularis oris

• Orbicularis oculi