Orbit And Contents

Question 1

Medial wall is thinner
And base and lateral wall have thicker bones

Question 2

Bulba conjuctiva
Palpebral conjuctiva
Melbomian gland

Answer 3

Melbonian gland

Barrier to prevent tears from spreading beyond eyelids

Question 4

Canchus
Aqeuos chamber and glassy chamber

Question 5

Sclera has more collagen and less hydrated
Cornea is has regular arrangement of collagen and hydrated

Question 6

Limbus junction

Question 8

Which bones form the floor of the orbit?

Answer 8

Zygomatic bone
Maxillary bone
Palatine bone

Question 9

Which bones form the

Question 10

Which bones form the medial wall of the orbit?

Answer 10

Lesser wing of sphenoid
Lacrimal bone
Orbital plate of ethmoid
Frontal process of the maxillary bone

Question 11

Which bones form the roof of the orbit?

Answer 11

Frontal bone
lesser wing of the sphenoid bone

Question 12

Which bones form the lateral wall of the orbit?

Answer 12

Zygomatic
Greater wing of sphenoid

Question 13

What forms the apex the orbit?

Answer 13

Optic canal

Question 14

Contents of the superior orbital fissure

Answer 14

Lacrimal nerve
Optic nerve
Superior branch and inferior branch of the ophthalmic veins
Superior branch and inferior branch of occulomotor nerve
Nasociliary nerve
Abducens nerve
Frontal nerve
Ophthalmic artery

Question 15

Contents of the tendinous ring

Answer 15

Abducens nerve
Nasociliary nerve
Optic nerve
Ophthalmic artery
Superior and inferior branch of occulomotor nerve

Question 16

The orbital sheaths of the eyeball

Answer 16

Periorbita / orbital fascia
Tenon’s capsule

Question 17

Orbital fat herniation or prolapse

Answer 17

The protrusion of orbital fat outside normal position

Question 18

Posterior perforations in the sclera for the passage of vessels is called

Answer 18

Lamina cribrosa of sclera

Question 19

He fibrous tunic of the eyeball comprises of

Answer 19

Sclera and cornea

Question 20

Where is the canal of Schlemm found?

Answer 20

The corneo- sclera junction

Question 21

What is the function of the canal of Schlemm?

Answer 21

It drains aqueous fluid into the venous system

Question 22

The vascular tunic comprises of

Answer 22

Choroid
Ciliary body
Iris

Question 23

The ciliary muscle is supplied by which nerve?

Answer 23

Occulomotor nerve

Question 24

Which part of the vascular tunic produces aqueous fluid?

Answer 24

Ciliary body

Question 25

What is the autonomic nerve supply to the sphincter pupillae muscle?

Answer 25

Parasympathetic supply

Question 26

Which autonomic nervous system supplies the dilator pupillae muscle

Answer 26

Sympathetic innervation

Question 27

What is the most sensitive part of the retina?

Answer 27

Fovea centralis

Question 28

The posterior aqueous chamber is the area between

Answer 28

The iris and the lens

Question 29

The anterior aqueous chamber is the area between the

Answer 29

The cornea and the iris

Question 30

Glaucoma

Answer 30

Caused when there is an overproduction of aqueous fluid which leads to increased intraocular pressure

Question 31

The two parts of the conjunctiva

Answer 31

Palpebral conjunctiva Orbital conjunctiva

Question 32

Nerve supply to the lacrimal apparatus is from

Answer 32

Pterygopalatine ganglion

Question 33

Nerve supply to the conjunctiva

Answer 33

Lacrimal nerve

Question 34

Nerve supply to the eyelids

Answer 34

Lacrimal nerve Supratrochlear Infratrochlear Supraorbital

Question 35

Check superior tasal innervated by the sympathetic fibers from the T1 segment