orbit Flashcards
eyelid, conjunctiva and lacrimal gland: describe their anatomy and their importance for maintenance of corneal integrity
1
Q
components of lacrimal system
A
lacrimal gland, lacrimal sac, nasolacrimal duct
2
Q
location of lacrimal gland
A
anterolateral superior orbit, just under LPS (laterally)
3
Q
nerve supply pathway of lacrimal gland
A
pterygopalatine ganglion -> zygomaticotemporal branch of facial nerve (CN VII) -> PSNS secretomotor fibres join lacrimal nerves
4
Q
location of pterygopalatine ganglion
A
behind cheek
5
Q
origin of lacrimal nerves
A
sensory branch of ophthalmic division of trigeminal nerve (V1)
6
Q
location of lacrimal sac
A
medial canthus of eye
7
Q
function of nasolacrimal duct
A
drain lacrimal sac (originally via lacrimal canaliculi) into inferior meatus of nasal cavity
8
Q
function of tears
A
wash across cornea with protective function and keep eye moist
