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Flashcards in The Eye Deck (29):
1

What is the base of the orbit

Orbital rim

2

What is the roof of the orbit

Orbital part of frontal bone
Sphenoid

3

What is the floor of the orbit

Orbital surface of maxilla
Zygomatic and palatine bones
Roof maxillary sinus
Inferior orbital fissure

4

What is the medial wall of the orbit

Maxilla
Lacrimal
Ethmoid
Sphenoid
Anterior and posterior ethmoid a, foraminae

5

What is the lateral wall of the orbit

Zygomatic
Greater wing of shpenoid

6

What are the parts of the muscle around the orbit area

Palpebral - on eyelids
Orbital - around orbit

7

What is the orbicularis oculi

Muscle of facial expression
Sphincter of the eye

8

What are the tarsal plates

Skelton of eyelid
Dense bands of connective tissue

9

What is embedded in the tarsal plates

The tarsal glands lubricate eyelids prevent sticking together

10

What to medial and lateral palpebral ligaments do

Act as anchor to the skeleton of eyelids

11

What is the levator palpebrae superioris

Muscle tendon
Dual motor nerve supply from oculomotor and and sympathetic

12

What does the palpebrae conjunctive cover

Internal surface of eyelids
Reflected onto eyeball and continuous to bulbar conjunctiva which is transparent

13

What does the bulbar conjunctive cover

Sclera

14

What does the bulbar conjunctive contain

Small blood vessels

15

What does the lacrimal gland produce

Tears

16

What type of innervation does the lacrimal glamd receive

Parasymp from facial nerve

17

What is the pupil

Variable sized black circular opening
Regulates amount of light into the eye

18

What does e iris attach onto

Sphincter pupillae muscle which contracts the pupil and the dilator pupillae which opens the pupil

19

What is the sclera

Opaque white
Fibrous protective layer of the Eh

20

What is the lacrimal apparatus

Containing orbital structures for tear production and drainage

21

How many layers does the eye consist of and what are those laters

3
- outer fibrous layer
- vascular pigmented layer
- inner layer mural retina layer

22

What does the vitreous humour do

Support the lens and retina

23

What does the ciliary body do

Produce the aq humour and control lens

24

What is the darker spot at the back of the eye called

Macula area of most acute vision

25

How does the ciliary body change the lens

Contrcating suspensory ligaments

26

What are the extraocular muscles

4 rectus - inferior, superior,lateral and medial
2 oblique - superior and inferior
Levator palpebrae

27

What cranial nerves supply what extraocular muscles

Lateral rectus - abducens
Superior oblique - trochlear
The rest oculomotor but the levator palpebrae superioris also has a sympathetic innervation

28

What are the divisions of the Opthalmic Nerve at the supra orbital fissure

Frontal - supra trochlear supra orbital
Lacrimal
Nasociliary - posterior ethmoid, infra trochlear, anterior ethmoidal ( external nasal)

29

What is the Apex of the orbit

The optic foramen