Anatomy

Question 1

How many bones make up the the orbital wall of the eye?

Answer 1

7 Bones

Frontal 
Sphenoid
Maxillary 
Ethmoid
Zygomatic

Question 2

What bones make up the floor of the orbit?

Answer 2

Maxilla
Palantine
Zygomatic

Question 3

What bones make up the lateral wall of the orbit?

Answer 3

Zygomatic

Greater wing of the sphenoid

Question 4

What bones make up the roof of the orbit?

Answer 4

Frontal

Lesser wing of the sphenoid

Question 5

What bones make up the medial wall of the orbit?

Answer 5

Ethmoid
Maxilla
Sphenoid

Question 6

What part of the orbit is most prone to fracture?

[Blowout fracture]

Answer 6

Floor of the orbit.

Its thin and unsupported. m

Question 7

What are the meibomian glands responsible for?

Answer 7

Forming the lipid layer of tears and preventing evaporation of tears.

Question 8

What do the lacrimal glands do?

Answer 8

Help produce the aqueous layer of tears.

Question 9

Which extraocular muscle is inserted nearest and furthest from to the cornea?

Answer 9

Medial rectus - 5.6mm

Superior rectus - 7.8mm

Question 10

What nerves run through the Annulus of zinc?

Answer 10

CN 2, 3, 5 + Nasocilliary nerve

Retrobulbar anaesthetic blocks affect these nerves.

Question 11

What nerves pass through the Superior orbital fissure (SOF)

Answer 11

2 Parts Superior and Inferior

S -Lacrimal nerve, Frontal nerve, CN 4
I - CN3, Nasocillary nerve (CNV1), 6

Question 12

What passes through the orbital foramen?

Answer 12

Optic nerve, Ophthalmic artery