Maxillary Nerve

Question 1

Course of maxillary Nerve

Answer 1

1. arises from trigemnal ganglion as a purely sensory nerve
2. it passes forewards along Lateral wall of cavernous sinus
3. it enters pterygo-palatine fossa through foramen rotundum
4. It moves laterally and enters orbit through inferior orbital fissure as infraorbital N
5. It enters the face through infraorbital foramen and divides into 3 terminal branches (palpebral, nasal & labial)

Question 2

Branches of Maxillary Nerve in Cranial cavity

Answer 2

Meningeal branch near foramen rotundum, supplies dura matter of middle cranial cavity

Question 3

Branches of Maxillary Nerve in Pterygo-palatine fossa

Answer 3

3:
* two ganglionic branches connecting Maxillary nerve to Sphenopalatine ganglion

• Posterior superior Alveolar Nerve; leaves through pterygopalatine fossa through pterygo-maxillary fissure and supplies upper molar teeth, gum & Maxillary sinus
• Zygomatic Nerve: through inferior orbital fissure, divides into zygomaticotemporal (supplies anterior part of temple) & zygomaticfacial (supplies skin over zygomatic bone)

Question 4

Branches of Maxillary Nerve in the orbit

Answer 4

• Middle superior alveolar Nerve (upper premolars , gum & maxillary sinus)
• Anterior superior alveolar Nerve descends in canalis sinosus (upper incisors, canines, gum & maxillary sinuses)