Temporal And Infratemporal Fossae

Question 1

Temporal Fossa Boundaries:

Temporal Lines

Answer 1

Posterior and Superior

Question 2

Temporal Fossa Boundaries:

Frontal and Zygomatic bones

Answer 2

Anterior

Question 3

Temporal Fossa Boundaries:

Zygomatic Arch

Answer 3

Lateral

Question 4

Temporal Fossa Boundaries:

Infratemporal crest of the sphenoid (best seen when the zygomatic arch has been removed)

Answer 4

Inferior

Question 5

The contents of the temporal fossa are:

Answer 5

1) Temporalis muscle and fascia
2) Deep temporal vessels and nerves
3) Superficial temporal vessels
4) Auriciulotemporal nerve

Question 6

Infratemporal Fossa Boundaries:

Posterior aspect of maxilla

Answer 6

Anterior

Question 7

Infratemporal Fossa Boundaries:

Lateral pterygoid plate

Answer 7

Medial

Question 8

Infratemporal Fossa Boundaries:

Ramus of the mandible

Answer 8

Lateral

Question 9

Infratemporal Fossa Boundaries:

Inferior surface of the greater wing of the sphenoid

Answer 9

Superior

Question 10

Infratemporal Fossa Boundaries:

The tympanic plate and the mastoid and styloid processes of the temporal bone

Answer 10

Posterior

Question 11

Infratemporal Fossa Boundaries:

site of attachment of the medial pterygoid to the mandible near its angle

Answer 11

Inferior

Question 12

The _____________ joint is a synovial joint; as well as a modified hinge joint.

Answer 12

Temporomandibular

Question 13

An ____________ disc, composed of _________, divides the temporomandibular joint into two compartments.

Answer 13

Articular

Fibrocartilage

Question 14

The ________ compartment of the temporomandibular joint is responsible for gliding movements of protrusion and retrusion.

Answer 14

Superior

Question 15

The _________ compartment of the temporomandibular joint is responsible for hinge movements of depression and elevation.

Answer 15

Inferior

Question 16

There are _____ muscles of mastication. Name them:

These muscles are innervated by branches of ____.

Answer 16

4
Temporalis m.
Masseter m.
Medial Pterygoid m.
Lateral Pterygoid m.

V3 (the mandibular branch of trigeminal nerve)

Question 17

Insertion of the Temporalis:

Answer 17

• Coronado process and anterior surface of the ramus of the mandible

Question 18

Innervation of the Temporalis:

Answer 18

• Anterior and posterior deep temporal nerves

Question 19

Actions of the Temporalis:

Answer 19

• Elevation of the mandible (closes mouth)
• Retrusion of the mandible
• Right and left lateral movements (grinding and chewing)

Question 20

Origin of the Temporalis:

Answer 20

-Inferior temporal line, temporal fossa, temporalis fascia

Question 21

Origin of the Masseter:

Answer 21

-Inferior border and medial surface of the maxillary process of the zygomatic bone and the zygomatic arch

Question 22

Insertion of the Masseter muscle:

Answer 22

-Angle and lateral surface of the mandible.

Question 23

Innervation of the Masseter muscle:

Answer 23

Masseteric nerve