Anatomy of Orbit

Question 1

Answer 1

Question 2

Answer 2

Question 3

Answer 3

Question 4

Answer 4

Question 5

Answer 5

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Question 9

Answer 9

Question 10

Answer 10

Question 11

Answer 11

Question 12

Answer 12

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15

Question 16

Answer 16

Question 17

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

Answer 20

Question 21

Answer 21

Question 22

Which space in the skull would a fracture in the floor of the orbit communicate with?

Question 23

Which space in the skull would a fracture in the medial wall of the orbit communicate with?

Answer 23

The nasal cavity or ethmoid sinus

Question 24

Follow the parasympathetic fibres that enter the orbit with CN III to the constrictor pupillae.

Question 25

Where are the preganglionic cell bodies of the parasympathetic fibres? Where is the ganglion? How do fibres travel from the ganglion to the orbit?

Answer 25

In the EW nucleus brain stem

Ciliary ganglion in the orbit

short cillary nerves

Question 26

Follow the sympathetic fibres that enter the orbit to the dilator pupillae

Question 27

Where are the preganglionic cell bodies of the sympathetic fibres? Where is the ganglion? How do the postganglionic fibres reach the orbit?

Question 28

What is amaurosis fugax? What about the anatomy of the ophthalmic artery makes it vulnerable?

Question 29

The orbital veins are the largest emissary veins. What is the functional / clinical significance of this?

Question 30

Explain why we often have a runny nose after a big cry

Question 31

What is the innervation of the lacrimal gland?

Answer 31

Parasympathetic is CN 7

sympathetic from t1
, sensation from CN 5