Anat Lab 7

Front 1

primary content of temporalis fossa is

Back 1

temporalis muscle

Front 2

Masseter muscle
• Attaches superior to

Back 2

zygomatic arch
• Attaches inferiorly to the lateral surface of the ramus of the mandible

Front 3

Masseter muscle • Innervated by

Back 3

masseteric branch of V3

Front 4

Temporalis muscle
• Attached to deep surface of

Back 4

temporal fascia
• Inferior attachment is coronoid process of the mandible

Front 5

Temporalis muscle

Back 5

• Innervated by
deep temporal nerves (branches of V3) which enter from deep surface (accompanied by deep temporal arteries

Front 6

Infratemporal Fossa

Back 6

inferior to the zygomatic arch and deep to the ramus of the mandible

Front 7

Sphenopalatine foramen

Back 7

an opening in the medial wall of the pterygopalatine fossa that enters the nasal cavity

Front 8

contents of

Back 8

• Medial and lateral pterygoid muscles
• Branches of V3 and V2

Front 9

• mylohyoid nerve innervates

Back 9

mylohyoid muscle and anterior belly of digastric

Front 10

mental nerve

Back 10

It is a branch of the posterior trunk of the inferior alveolar nerve, which is itself a branch of the mandibular division of the trigeminal nerve (CN V).

Front 11

lingual nerve • passes medial to

Back 11

the 3rd mandibular molar tooth and innervates the mucosa of the anterior 2/3 of the tongue and floor of the oral cavity

Front 12

lingual nerve sits on top of

Back 12

medial pterygoid m.

Front 13

Maxillary artery crosses

Back 13

• Crosses either the superficial surface (2/3) or the deep surface (1/3) of the lateral pterygoid muscle.

Front 14

• Middle meningeal artery enters the cranium via and supplies

Back 14

foramen spinosum
dura matter

Front 15

• Deep temporal arteries supply

Back 15

deep surface of the temporalis muscle

Front 16

• Masseteric artery: passes through and supplies

Back 16

through the mandibular notch to enter the deep surface of the masseter mscle

Front 17

• Buccal artery

Back 17

• Enters pterygopalatine fossa after dividing into four branches

Front 18

Lateral pterygoid muscle job

Back 18

• depresses the mandible (opens the jaw)

Front 19

Medial pterygoid muscle job

Back 19

• Elevates the mandible (closes the jaw)

Front 20

Dental anesthesia is produced by injecting an anesthetic agent into

Back 20

the infratemporal fossa to block the mandibular nerve. This will anesthetize the mandibular teeth, lip, chin, and tongue.

Front 21

Temporomandibular Joint

Back 21

Between the condyle of mandible and mandibular fossa

Front 22

• superior synovial cavity

Back 22

gliding movements occur between the aricular disc and articular tubercle (protrusion and retraction)

Front 23

• Inferior synovial cavity

Back 23

hinge movements occur between the head of the mandible and the articular disc

Front 24

• Articular disc sits within mandibular fossa and covers

Back 24

condyle of the mandible

Front 25

The articular disc becomes looser with age and starts to ride forward anteriorly over condyle so the back starts to

Back 25

hit mandibular fossa causing a clicking noise because the disc is becoming loose.
*Mandible only dislocates anteriorly.