Muscles of Mastication and Muscles of Neck

Question 1

Locate the temporalis and give its origin, insertion, and action

Answer 1

Location-lining of temporal bone
Origin-lateral surface of cranium
Insertion-coronoid process of the mandible
Action-moves jaw

Question 2

Locate the masseter and give its origin, insertion, and action

Answer 2

Location-part of jaw that you flex
Origin-zygomatic arch
Insertion-mandible
Action-closes jaw

Question 3

Locate the lateral and medial pterygoid

Answer 3

Lateral is horizontal and medial is up and down. Medial is also higher

Question 4

Locate the platysma

Answer 4

Anterior chin to neck

Question 5

Locate the sternocleidomastoid and give its origin, insertion, and action

Answer 5

Location-what you can grab
Origin-sternum and clavicle
Insertion-mastoid process
Action-tilts head side to side

Question 6

Locate the anterior and posterior bellies of the digastric

Answer 6

Anterior-2 muscles under mandible

Posterior-most posterior small muscle under mandible

Question 7

Locate the sternohyoid

Answer 7

anterior, hyoid to sternum muscle

Question 8

Locate the omohyoid (superior and inferior bellies)

Answer 8

lateral of sternohyoid

Question 9

Locate the scalenes (anterior, posterior, and middle grouped)

Answer 9

Sides of neck, page 593