Anatomy and Physiology Flashcards Preview

Y2 Ophthalmology > Anatomy and Physiology > Flashcards

Flashcards in Anatomy and Physiology Deck (29):
1

7 bones that make up the orbit

Frontal, zygomatic, maxilla, nasal, sphenoid, ethmoid, lacrimal

2

Bone which contains the optic canal

sphenoid

3

Bone with the infraorbital foramen

Maxilla

4

External layer of the eyelid

Orbicularis oculi, orbital and palpebral parts

5

Levator palpebrae superioris is opened by which cranial nerve

CN III

6

Lacrimal gland is controlled by which cranial nerve?

CN VII

7

Path of the tears across the eye

Angular wash from the superior temporal area to the inferior nasal area, drain into puncta, lacrimal sac and then the nasolacrimal duct

8

3 layers of the eye

fibrous, uvea, retina

9

2 parts to the fibrous layer of the eye

sclera, cornea

10

3 layers to the Uvea

Iris, ciliary body, chorodi

11

Where is the anterior segment of the eye?

in front of the lens

12

Where is the anterior chamber of the eye

in the anterior segment between the cornea and iris

13

Humour within the anterior chamber ?

aqueous

14

Where is the posterior chamber of the eye?

the iris and the suspensory ligaments

15

Humour within the posterior chamber in the eye?

aqueous

16

Where are floaters commonly found?

the vitreous humour in the posterior

17

What is a cataract?

a clouding of the lens

18

What produces the aqueous humour?

the ciliary body

19

Where is the aqueous humour reabsorbed?

the canal of schlemm at the iridocorneal angle

20

What nerve does the ophthalmic artery travel alongside?

the optic nerve CN II

21

what does the ophthalmic artery branch into?

the central artery of the retina and the ciliary arteries

22

Alongside the optic artery, what is also within the optic nerve?

the central retinal vein

23

what other veins are found around the eye apart from the Central retinal vein?

superior and inferior ophthalmic veins

24

Where do the superior and inferior ophthalmic veins drain?

anterior into the facial vein, posteriorly into the cavernous sinus

25

What is the fundus?

the posterior area where light is focussed

26

What does the fundus include?

the optic disc, the macula and the fovea

27

What is the fovea?

the centre of the macula and area of most acute vision

28

What is the order of cells in the retina from posterior to anterior? (3)

the photoreceptors --> ganglion cells --> axons --> arteries and veins

29

Why is the retina the blind spot?

there are no photoreceptors on the optic disc