Eyes

Question 1

4 parts of conjunctiva

Answer 1

1. Palpebral conjunctiva
2. Bulbar conjunctiva
3. Fornix
4. Conjunctival sac

Question 2

Bulbar conjunctiva covers?

Answer 2

Sclera

Question 3

Conjunctival sac

Answer 3

Potential cavity formed when eye is closed

Question 4

Plica semilunaris

Answer 4

Fold of palpebral conjunctiva and cartilage protruding from medial angle of eye

Question 5

Eyelids are called?

Answer 5

Superior and inferior palpebrae

Question 6

Where eyelids meet is called?

Answer 6

Medial and lateral commissures (or canthi)

Question 7

Lacrimal gland produces ___% of tears.

Gland of 3rd eyelid produces ___%

Answer 7

Lacrimal - 70%

Gland of 3rd eyelid - 30%

Question 8

Ocular adnexa

Answer 8

Things attached to eye

Question 9

Boundaries of orbit

Answer 9

Medial: frontal, presphenoid and lacrimal bb.

Ventral: zygomatic sg. and pterygoid mm.

Caudodorsal: temporal m.

Question 10

Orbital margin

Answer 10

Osseous margin formed by frontal, larimal and zygomatic bb. + orbital lig.

Question 11

Periorbita

Answer 11

Sheath of CT and smooth m. which encloses orbital contents

Question 12

Lacrimal gland drains into?

Answer 12

1. Conjunctival sac
2. Superior and inferior lacrimal puncta
3. Lacrimal canaliculi
4. Lacrimal sac
5. Nasolacrimal duct
6. Nasal vestibule

Question 13

Parts of external fibrous coat

Answer 13

1. Cornea
2. Sclera
3. Limbus

Question 14

External fibrous coat is the insertion for?

Answer 14

Extrinsic ocular mm.

Question 15

Parts of uvea

Answer 15

1. Choroid
2. Ciliary body
3. Iris

Question 16

Choroid

Answer 16

Posterior portion of uvea lining internal surface of sclera including tapetum lucidum

Question 17

Ciliary body is?

Answer 17

Thickened mound at limbus

Question 18

Ciliary body produces?

Answer 18

Aqueous humor

Question 19

Contraction of ciliar m. causes?

Answer 19

Relaxed zonular fibers → lens becomes more spherical (near vision)

Question 20

Aqueous humor production and resorption

Answer 20

1. Ciliary body →
2. Posterior chamber →
3. Pupil →
4. Anterior chamber →
5. Iridocorneal angle →
6. Scleral venous plexus

Question 21

Internal nervous coat is?

Answer 21

Retina

Question 22

Vitreous chamber

Answer 22

Posterior to lens, filled with vitreous-body

Question 23

Aqueous humor is containd in?

Answer 23

Posterior and anterior chambers

Question 24

Trochlear n. innervates?

Answer 24

Dorsal oblique m.

Question 25

Abducent n. innervates?

Answer 25

Lateral rectus m.

Question 26

Most mm. of eye are innervated by?

Answer 26

Occulomotor n.