Orbit

Question 1

Bones

Answer 1

Frontal 
Zygomatic 
Maxilla
Ethmoid 
Lacrimal 
Sphenoid

Question 2

Orbital content

Answer 2

Eyeball
Fat and connective tissue 
Extraocular Muscles 
Nerves 
Blood vessels

Question 3

Tarsal plates

Answer 3

Dense connective tissue
Glands
Support eyelids

Question 4

Ligaments of eyeball

Answer 4

Suspensory ligaments support eyeball

Check ligament restrict medial and lateral recti

Question 5

Retina

Answer 5

Rods and cones
Blind spot= optic disc
Macula lutes= fovea

Question 6

Aqueous humor

Answer 6

Anterior lens, helps to maintain intraocular pressure

Made by ciliary body, drains into corneo-scleral junction

Question 7

Vitreous humor (body)

Answer 7

Embryological
Transparent jelly
Posterior to lens
Supports retina

Question 8

Intraocular (intrinsic) muscles

Answer 8

Dilator pupillae increases the diameter of the pupil

Sphincter pupillae decreases the diameter

Question 9

Ciliary muscle

Answer 9

Intrinsic eye muscle- change shape of lens for accommodation- oculomotor nerve

Question 10

Extraocular (extrinsic) Muscles

Answer 10

7 extraocular Muscles- levator palpebrae
Superior, inferior, medial and lateral recti from annular ring to sclera
Superior oblique and inferior oblique to sclera

Question 11

Eyeball muscle

Answer 11

Levator palpebrae- raises eyelid- oculomotor
Superior rectus- elevation, adduction, intorsion- oculomotor
Inferior rectus- depression, adduction, extortion-oculomotor
Medial rectus- adduction- oculomotor
Lateral rectus- abduction- abducent
Superior oblique- intorsion, depression, abduction- trochlear
Inferior oblique- extortion, elevation, abduction- oculomotor