Jaw

Question 1

Temporalis: O

Answer 1

Floor of Temporal Fossa and deep surface to temporal fascia

Question 2

Temporalis: I

Answer 2

Tip and medial of Coronoid process and anterior border of Ramus of Mandible

Question 3

Temporalis: N

Answer 3

Deep Temporal branches of Mandibular Nerve (CN V)

Question 4

Temporalis: A

Answer 4

• Elevates Mandible to close jaw
• retrudes (pulls back) Mandible after protrusion (pulls anterior) (posterior fibers)

Question 5

Masseter: O

Answer 5

Inferior border and medial aspect of Zygomatic Arch

Question 6

Masseter: I

Answer 6

Coronoid Process and lateral aspect of Ramus of Mandible

Question 7

Masseter: N

Answer 7

Mandible Nerve via Massenteric Nerve

Question 8

Masseter: A

Answer 8

• Elevates Mandible to close Jaw
• Protrudes Mandible anteriorly
• retrudes Mandible (deep fibres)

Question 9

Lateral Pterygoid: O

Answer 9

Superior Head - Infratemporal surface and crest of Greater Wing of Sphenoid
Inferior Head – Laterally on lateral Pterygoid Plate

Question 10

Lateral Pterygoid: I

Answer 10

Neck of Mandible, articular disc and capsule and capsule of Temporomandibular joint

Question 11

Lateral Pterygoid: N

Answer 11

Mandible Nerve via lateral Pterygoid Nerve

Question 12

Lateral Pterygoid: A

Answer 12

• Depresses Mandible to open Jaw
• protrudes Mandible anteriorly
• protrudes Mandible laterally (unilaterally)
• protrudes side to side movement of mandible (unilaterally and alternately)

Question 13

Medial Pterygoid: O

Answer 13

Deep Head – Medial on lateral Pterygoid Plate and Pyramidal process of Palatine
Superficial Head – Tuberosity of Maxilla

Question 14

Medial Pterygoid: I

Answer 14

Medial aspect of Ramus of Mandible, inferior to Mandible Foramen

Question 15

Medial Pterygoid: N

Answer 15

Deep Head – Medial on lateral Pterygoid Plate and Pyramidal process of Palatine
Superficial Head – Tuberosity of Maxilla

Question 16

Medial Pterygoid: A

Answer 16

Helps elevate Mandible to close Jaw

• helps protrude Mandible anteriorly
• protrudes Mandible laterally
• produces grinding motion (unilaterally and alternately)