Muscles Of Mastification & Cervical region

Question 1

Maseter

Answer 1

• Origin: Zygomatic arch
• Insertion: Mandible
• Action: elevate mandible

Question 2

Temporalis

Answer 2

• Origin: Temporal
• Insertion: mandible
• Action: elevate mandible

Question 3

Lateral pterygoid

Answer 3

• Origin: Lateral pletyroid process
• Insertion: mandibular condyle
• Action: ant & Side to side movement of mandible

Question 4

Medial pterygoid

Answer 4

• Origin: Medial pterygoid process
• Insertion: medial surface of mandible
• Action: ant & side to side movement of mandible

Question 5

Sternocleidomastoid

Answer 5

• Origin: sternum and clavicle
• Insertion: mastoid process
• Action: flexion and rotation of neck

Question 6

Trapezius

Answer 6

• Origin: occipital bone and C7-T12
• Insertion: Acromion/ spine of scapula
• Action: extend neck, elevate scapula