Muscles of Mastication

Muscles of Mastication

Muscles of Mastication, learn them. Masseter,Temporalis, Medial pterygoid, Lateral pterygoid.

published on March 13, 2013
1/16

What are the main actions of the Masseter?

2/16

What is the nerve supply of the Temporalis?

3/16

What is the main action the lateral pterygoid causes?

4/16

What is the nerve that supplies the Medial pterygoid?

5/16

What are the main actions of the temporalis?

Hint: 3 choices
Elevates the mandible
Squeezes the mandible
Invaginates the mandible
Retrudes the mandible
Aids in lateral excursion of the mandible
6/16

Where is the insertion of the Masseter?

Hint: 2 choices
Angle of mandible (inferior and lateral parts of the mandibular ramus)
Coronoid process
Angle of maxilla (exterior taxi)
Superocentral mandibular ramus (coronoid process)
Condyloid process
Superolateral mandibular ramus (coronoid process)
7/16

What action does the medial pterygoid do?

8/16

What is the nerve supplying the Masseter?

Facial nerve
Trigeminal nerve
Liver nerve
9/16

Where is the origin of
- Masseter superficial head (larger part)
- Masseter deep head (smaller part)

Hint: 2 choices
Inferior border of the anterior 2/3 of the zygomatic arch
Lateral border of the zygomatic arch. Inferior border of the posterior 1/3 of the zygomatic arch
Exterior border of the anterior 2/3 of the zygomatic arch
Medial border of the zygomatic arch. Inferior border of the posterior 1/3 of the zygomatic arch
Medial border of the zygomatic arch. Inferior border of the posterior 1/3 of the maxillary arch
10/16

Which nerve supplies the lateral pterygoid?

11/16

Where is the origin of the Medial Pterygoid?

Lateral surface of the lateral pterygoid, and Maxillary tuberosity
Medial surface of lateral pterygoid plate, and Maxillary tuberosity
Lateral surface of the medial pterygoid, and Maxillary tuberosity
12/16

Where is the insertion of the temporalis?

Condyloid process
Coronoid process
Conaroid process
13/16

Where is the insertion of Medial pterygoid?

14/16

Where is the origin of the Masseter?

Where is the origin of the Masseter?
Exterior border of the anterior 2/3 of the zygomatic arch
Inferior border of the anterior 2/3 of the zygomatic arch
Exterior border of the exterior 2/3 of the zygomatic arch
15/16

Where is the origin of the Temporalis?

16/16

What is the origin and insertion of the Lateral pterygoid?

Hint: 2 choices
Insertion: articular disc and pterygoid fovea on neck of condyle
Origin: Greater wing sphenoid and lateral surface of pterygoid
Insertion: Mandible
Origin: Sphenoid and pterygoid
Insertion:Neck of condyle and condoloid process
Origin: Sphenoid and central surface of the pterygoid
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