Temporal/Infratemporal Fossa

Question 1

Floor of temporal fossa

Answer 1

-frontal, parietal, temporal & greater wing of sphenoid

Question 2

1st part of maxillary artery

Answer 2

-deep auricular, anterior tympanic, middle meningeal, accessory meningeal, inferior alveolar

Question 3

Deep auricular

Answer 3

-to external acoustic meatus

Question 4

Anterior tympanic

Answer 4

-to tympanic membrane

Question 5

Middle meningeal

Answer 5

-to the cranial meninges through foramen spinosum

Question 6

Accessory meningeal

Answer 6

-to the cranial meninges through the foramen ovale

Question 7

Inferior alveolar

Answer 7

-to the mandibular teeth through mandibular foramen

Question 8

2nd part of maxillary artery

Answer 8

• lies over the lateral pterygoid muscle.

- -masseteric branches, deep temporal branches, pterygoid branches, buccal branches

Question 9

Masseteric branches

Answer 9

-supply the masseter

Question 10

Deep temporal branches

Answer 10

-supply the temporalis

Question 11

Pterygoid branches

Answer 11

-supply the medical and lateral pterygoid

Question 12

Buccal branches

Answer 12

-supply the muscles of the cheek

Question 13

3rd part of maxillary artery

Answer 13

• extends from the medial edge of lateral pterygoid muscle to its termination in the pterygopalatine fossa & provides this branches—>
• —posterior superior alveolar, infraorbital, descending palatine, sphenopalatine

Question 14

3 ligaments of TMJ

Answer 14

-stylomandibular, sphenomandibular, lateral ligament

Question 15

Stylomandibular

Answer 15

-a band of deep cervical fascia from styloid process to angle of mandible

Question 16

Sphenomandibular

Answer 16

-membranous band from spine of sphenoid to lingula of mandible

Question 17

Lateral ligament

Answer 17

-temporomandibular ligament–>attached to the capsule and to the articular disc—>checks mediolateral movement of TMJ

Question 18

Sensory branches of mandibular nerve

Answer 18

-auriculotemporal nerve, buccal nerve, inferior alveolar nerve, lingual nerve

Question 19

Auriculotemporal nerve

Answer 19

• encircles middle meningeal artery and supplies——–>auricle, skin over the temporal region, TMJ, secretory para fibers to the parotid. This fibers belong to CN IX but travel with auriculotemporal nerve.
• -external auditory meatus and tympanic membrane

Question 20

Buccal nerve

Answer 20

-long buccal–>supplies skin and mucous membranes of cheek and lateral surface of oral gingiva

Question 21

Inferior alveolar nerve

Answer 21

• supplies all teeth on its side of mandible, passes through the mandibular foramen to enter the mandible
• -has 3 branches–>mylohyoid nerve, mental nerve, incisive nerve

Question 22

Lingual nerve

Answer 22

-sensory to the tongue, floor of the mouth and gingiva

Question 23

Mylohyoid nerve

Answer 23

• supplies the anterior belly of digastric and mylohyoid muscles.
• this branch is given off before the nerve enters the mandible

Question 24

Mental nerve

Answer 24

-supplies the skin of the chin. Exits the inferior alveolar canal through the mental foramen

Question 25

Incisive nerve

Answer 25

-continues further through the mandible after mental nerve is given off to supply the canine and incisor teeth