DH 105 HEAD AND NECK EXAM 3 QUESTIONS WITH CORRECT ANSWERS

DH 105 HEAD AND NECK EXAM 3 QUESTIONS
WITH CORRECT ANSWERS 2026-2027
List 4 pairs of muscles of mastication - CORRECT ANSWER -- masseter

- temporalis

- medial pterygoid

- lateral pterygoid



Origin/ insertion of masseter - CORRECT ANSWER -
Origin of superficial head: anterior 2/3 of inferior border of zygomatic arch

Insertion of superficial head: angle of mandible

Origin of deep head: post 1/3 of inferior border and medial surface of zygomatic arch

Insertion of deep head: ramus of mandible



Origin/ insertion of temporalis - CORRECT ANSWER -
Origin: temporal fossa bound at infratemporal line

Insertion: coronoid process



Origin/ insertion of medial pterygoid - CORRECT ANSWER -
Origin: pterygoid fossa of sphenoid bone

Insertion: medial, surface of angle of mandible



Origin/ insertion of lateral pterygoid - CORRECT ANSWER -
Origin of superior head: greater wing of sphenoid bone

Insertion: pterygoid fovea of mandible

Origin of inferior head: lateral pterygoid plate of sphenoid bone

Insertion of inferior head: pterygoid fovea of mandible

, Describe the primary actions of the muscles of mastication - CORRECT ANSWER -
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X2 X 2 X 2 X 2 X 2




- closing jaws
X2 X 2




-moving mandible X 2




-shifting mandible X 2




-protrusion

-retraction



Which muscle of mastication does NOT elevated the mandible? - CORRECT ANSWER -
X 2 X 2 X 2 X 2 X2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Lateral pterygoid
X2 X 2




What is the blood supply to muscles of mastication? - CORRECT ANSWER -maxillary artery
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




List the following about the mylohyoid muscle
X 2 X 2 X 2 X 2 X 2 X 2 X2




Origin

Insertion

Action - CORRECT ANSWER - X 2 X 2 X 2 X 2




Origin: mylohyoid line + mylohyoid ridge Insertion: body of hyoid
X 2 X 2 X 2 X 2 X 2 X2 X 2 X2 X 2




Action: jaw opening + swallowing, elevates tongue
X 2 X 2 X 2 X 2 X 2 X 2




All but one of the infrahyoid muscles depresses the hyoid, name it - CORRECT ANSWER -
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Sternothyroid; depresses thyroid/ larynx
X2 X 2 X 2 X 2




The X 2




muscle has two bellies which attach to an intermediate tendon
X
2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




- CORRECT ANSWER -Digastric
X2 X 2 X 2