Orbit

Question	Answer
What nerve brings both parasympathetic and sympathetic innervation to the lacrimal gland?	Lacrimal nerve (branch from CNV1)
Where does the sympathetic innervation of the lacrimal gland come from?	Superior cervical ganglion
Where does the parasympathetic nerve supply to the lacrimal gland come from?	Facial nerve via greater petrosal nerve and pterygopalatine ganglion
What bones make up the medial wall of the orbit?	Ethmoid bone and contributions from the frontal, lacrimal and sphenoid bones
What bones make up the lateral wall of the orbit?	Frontal process of zygomatic bone and greater wing of sphenoid
What bones make up the floor of the orbit?	Maxilla, zygomatic and palatine bones
What bones make up the roof/ superior wall of the orbit?	The orbital part of the frontal bone
What is found in the apex of the orbit?	Optic canal
What bone makes up the apex of the orbit?	Lesser wing of the sphenoid
What is the function of the eyelids and lacrimal fluid?	Protect the cornea and eyeball from injury and irritation
What structures pass through the optic canal?	Optic nerve (CN II) and the ophthalmic arteries
What structures pass through the superior orbital fissure?	Ophthalmic veins, ophthalmic nerve (CNV1), CNIII, CNIV and CNVI and sympathetic fibres

Resource summary

	Created by reynoldslaura over 10 years ago