Muscles of Mastication Flashcards Preview

DH 111 Dental and Orofacial Anatomy > Muscles of Mastication > Flashcards

Flashcards in Muscles of Mastication Deck (4)
Loading flashcards...
1
Q

Masseter Muscle

Location
Region
Origin
Insertion
Action
A

Location: Superficial cheek
Region: cheek

Origin: Superficial Head- zygomatic process 
Deep head- zygomatic arch

Insertion: Superficial Head- angle of mandible
deep head- ramus

Action: Elevation of mandible
closing the jaw

2
Q

Temporalis Muscle

Location
Region
Origin
Insertion
Action
A
Location: temporal bone
Region: temple
Origin: temporal fossa
Insertion: coronoid process of mandible
Action: Elevation/ retraction of mandible 
allows space between teeth (freeway space)
3
Q

Medial Pterygoid

Location
Region
Origin
Insertion
Action
A

Location: Below lateral along ramus
Region: spheniod

Origin: Deep- pterygoid fossa
superficial- maxilla

Insertion: Ramus/ angle of mandible
Action: Elevates mandible

4
Q

Lateral Pterygoid

Location
Region
Origin
Insertion
Action
A

Location: In front of ear
Region: sphenoid

Origin: Superior- sphenoid bone 
inferior- lateral pterygoid plate

Insertion: Mandibular condyle
Action: Side to side movement, protrusion