Trigeminal n. (CN V) -Maxillary n. (V2) [sensory]

Question 1

Pterygopalatine nerves (emerge from pterygopalatine ganglion)

Answer 1

i. Pharyngeal n.
ii. Lesser palatine n.
iii. Greater palatine n.
iv. Nasal nn.
(1) Nasoopalatine n.
(2) Posterior superior lateral nasal n.
(3) Posterior superior medial nasal n.

Question 2

Zygomatic n.

Answer 2

function- sensory & postganglionic sympathetic innervation of the skin overlying the zygomatic arch, and postganglionic parasympathetic (axons via CN VII arise from pterygopalatine ganglion) innervation of the lacrimal gland (communicates with the lacrimal n.of V1)

Question 3

Posterior superior alveolar n.

Answer 3

function- sensory & postganglionic sympathetic innervation of the upper molars, and sensory, postganglionic sympathetic & postganglionic parasympathetic (via CN VII) innervation of maxillary sinus

Question 4

Infraorbital n.

Answer 4

function- sensory innervation of the skin of the upper lip, lateral nose and lower eyelid, and mucosa of upper lip

i. Anterior superior alveolar n.
ii. Middle superior alveolar n.