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Opthalmology > LE 1 > Flashcards

LE 1 Flashcards

(54 cards)

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1
Q

What are the bones that make up the orbit:

A

Roof : front - less
Lateral : the great - Z
Medial : Smel (l)
Floor : zip my pants

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2
Q

Contains the lacrimal gland fossa

A

Orbital plate of the frontal bone

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3
Q

Contains the optical canal

A

Lesser wing of the sphenoid

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4
Q

Serves as the pulley of superior oblique

A

Fovea trochlearis

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5
Q

Distance of fovea trochlearis from the orbital margin

A

4mm

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6
Q

Paper thin medial wall

A

Lamina papyracea

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7
Q

Components of the medial orbital wall

A

Lesser wing of Sphenoid , Maxillary , Ethmoid, Lacrimal

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8
Q

This is the thickest and strongest part of the orbit

A

Lateral wall

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9
Q

Components of the lateral

A

The GREAT wing of sphenoid, Zygomatic

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10
Q

What are the ligaments that attach to the lateral orbital tubercle:

A 
Mnemonic: PAl CHECK our SUSPENDED APO
lateral PALpebral ligament
Check ligament of the LR
Suspensory ligament of the eye ball
Aponeurosis of the levator ligament
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11
Q

Made up of 3 bones?

A

Floor - ZIP MY PANTS and push me to the floor

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12
Q

Damage to this bone produces a Blow out fracture

A

Maxillary bone

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13
Q

Contains the infraoribtal formamen

A

Floor

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14
Q

Which part of the orbit does the only muscle which arises from the floor

A

Floor - inferior oblique muscle

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15
Q

Volume of orbit

A

30cc

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16
Q

Entry portal of ALL nerves and vessels

A

Orbital apex

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17
Q

Site of origin of ALL eoms except IOM

A

Annulus of zinn

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18
Q

Where does the ophtalmoc artery branc put!

A

Intracranial ICA

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19
Q

This is the first major branch of the intracranial ICA

A

Opthalmic artery

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20
Q

Enters the optic nerve 8-15mm behind the globe

A

Central retinal artery

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21
Q

Supplies upper eyelids and lacrimal gland

A

Lacrimal artery

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22
Q

Supplies the eyelids

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A

Medial palpebral arteriese

23
Q

Pathway venous drainage in the orbit

24
Q

What re the external ocular structures

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A

Eyelids
Conjunctiva - lines the inside of the eyelids and covers the eyes
Sclera - white part of the eyeball
Limbus - junction
Cornea - transparent layer covering the front of the eye
Lacrimal apparatus

25
Outer structure that protects and lubricates the eye with the help of the meibonian gland (wi tarsus)
Eye lid
26
T or f : eyelids covers about 2 mm of sup. limbus
T
27
T or F : lower eyelid is not at the level of the limbus
F
28
Exposed zone between the upper and lower eyelids
Interpalpebral fissure
29
Normal size of the interpalpebral fissure
27 mm long, 8-11 mm wide
30
T or F : the lower eyelid is more mobile, FF up ehat diatance can it be moved..
False. The upper eyelid is more moveable and it can be raised up to 15 mm
31
Thinnest skin in the body
Skin of the eyelid
32
Eyefold is due to what?
Insertion of levator aponeuorsis
33
Where does the eyelashes arise from?
Anterior portion of the eyelid
34
Responsible for voluntary control of the eye
Orbital of the orbicularis oculi
35
If relfex and voluntary action of the palpebra
Palpebral part of orbicularis oculi
36
This provides a barrier to spread of blood or inflammation or infection
Orbital septum
37
This muscle elevates the eyelids and is innervated by cranial nerve 3
Superior tarsus muscle or muellers muscle
38
This structure is analogous to the nictating membrane of lower animals
Plica semilunaris
39
Vascular supply of conjunctiva
Anterior ciliary artery
40
Blood supply of the
Lacrimal artery
41
Junction between the cornea and sclera
Limbus
42
Bilateral condition manifesting as a white ring in the periphery of the cornea
Arcus senilis
43
This is the space between the cornea and the iris
Anterior chamber
44
Middle, vascular layer of the eye, contributes to the blood of the retina
Uveal tract
45
The uveal tract is composed of the following
Iris ciliary body choroid
46
Colored part of the eye , pigmented posterior surface
Iris
47
Blood supply of the iris
Major circle of the iris
48
Sensory innervation of the iris
Ciliary nerves
49
Circular opening of the iris
Pupil
50
Structure of the eye that produces aq humour
Ciliary body
51
This structure provides the blood supply to the outer retinal layer
Choroid
52
Volume of the vitreous cavity
4.5cc
53
Responsible for fine vision
Macula
54
Blood supply of the optic nerve
Circle of zinn haller

Opthalmology (1 decks)

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