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Special sense Anatomy > Blood supply of orbit + Embryo > Flashcards

Blood supply of orbit + Embryo Flashcards

1
Q

بسم الله الرحمن الرحيم وبه نستعين
_________________________
Opthalmic artery origin ?

A

ICA emerging from roof of cavernous sinus medial to ant clenoid process

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2
Q

Coures and relation of Opthalmic artery :-
Entering Orbit through …….?
………..to optic nerve ? both are enclosed with ?
It pireces the ,,,,,,,, crossing above ……….. with ……. from ….to…….. running along the ….wall of orbit between two muscles mention ?
Terminated near the medial angle of eye by dividing into ? ?

A

Optic canal
Inferolateral - common dural sheath
dura mater - optic nerve - nasociliary nerve from lateral to medial along the medial wall
Between superior oblique and MR
Termination ? =
Dorsal nasal + supraTrochlear arteries

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2
Q

Coures and relation of Opthalmic artery :-
Entering Orbit through …….?
………..to optic nerve ? both are enclosed with ?
It pireces the ,,,,,,,, crossing above ……….. with ……. from ….to…….. running along the ….wall of orbit between two muscles mention ?
Terminated near the medial angle of eye by dividing into ? ?

A

Optic canal
Inferolateral - common dural sheath
dura mater - optic nerve - nasociliary nerve from lateral to medial along the medial wall
Between superior oblique and MR
Termination ? =
Dorsal nasal + supraTrochlear arteries

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3
Q

The most imp branch of opthalmic art ?

A

Central retinal artery

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4
Q

Central retinal artery
Arises from,……near……..
running below …… in …… pierces the ……..about 1/2 inch behind the eyeball to run in the substance of the nerve
Dividing into ,…..and……..branches each giving ….and….. branches ? to supply ?

A

Opthalmic artery near optic canal
Running below dural sheath pierceing the optic nerve
dividing into supiero and inferior branches each into temporal and nasal branches

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5
Q

The only artery can be seen by naked eye in fundus examination ?

A

Central retinal artery

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6
Q

Mention branches of Opthalmic artery IMP

A

-Central retinal artery
-Post ciliary arteries for choroid and iris
-Musclear or ant ciliary
-Lacrimal giving Lateral palpebral ! + Zygomatic + meningeal
-Medial palpebral
-Ant and post ethmoidal
-Dorsal nasal
-SupraOrbital
-SupraTrochlear
_______________________
2 ciliary 2 ethmoidal 2 supra 2 palpebral + dorsal nsal
CES PDor
كيس بذور
اي حاجة@@
Ciliary - Ethmoidal - supra - palpebral remember lacrimal + dorsalارسم الرسمة @@

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7
Q

Venous drainage of eye ?

A

Superior and inferior opthalmic veins

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8
Q

Vein accomaniying opthlamic artery above the optic nerve

A

? SOV

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9
Q

vEIN Passes through Superior Orbital fissure and drarins into cavernous sinus ?

A

Superio othalmic vein

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10
Q

SOV communcating anteriorly with ,,,+,,,,,,

A

SupraOrbital veins + Angular veins

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11
Q

Drainaing of Inferior Opthamic vein

A

1-Direct into Cavernous sinus
2-Indirect into cavenorus sinus through joining SOV
3-Indirect into Cavernous sinus through joining Pterygoid venous pleux by a smaal vein passing through Inferiro Orbital fissure

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12
Q

Mnetion Lymphatics of Orbit

A

Drains into Periauricualr LNs

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13
Q

Mention structre of eyelid

A

Skin
superficial fascia = Papbebral Orbiuclaris oculi
Palpebral fascia = Tarsus + meibomian glands
Conjunctiva

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14
Q

Mention blood supply of eye lids ?

A

Arterial =
Medial palpebral from opthalmic
Lateral palpebral from Lacrinal of opthalmic with anastomisis
___________________
venous = opthalmic + Facial veins

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15
Q

Anstomisis between ICA and ECA in Eye ?

A

Dorsal nasal of opthalmic FROM ICA
Facial artery giving nasal branch From ECA

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16
Q

mENTION nereve supply of EYE LID ?

A

upper eyelid palpebral form lacrimal of OPTHALMIC
lower eyelid Palpebral from InfraOrbital Of Maxillary
Both Trigeminals

17
Q

Lymph drainage of Eye lids?

A

Medial halves in Submandibular LNS
Lateral halves in Periauricular LNS

18
Q

Mention sources of eye developments

A

=Neuroectoederm 5 CO2RI
Ciliary bodies + irsis + Optic nerve + optic vesicle + retina
=Surface ectodemrs lenc : Lens vesicel + Corneal (epithelium )
Mesoderm VASC2 :
=Viterous body+ ant chamber + Sclera + choroid + Cornea except epithelium

19
Q

Optic vesciles are formed at which week ? >

A

Week 4 ! causing formation of lens palacode then lens pit which spearates formin lens vesicle
from ectoooderm!

20
Q

How lens vesicle is formed

A

At 4th week Optic vesicle formed cuasing formation of lens palacode then lens pit speataed forming lens vesicle
from ectodemm!!

21
Q

Optic cup is ,,,,, layered forming ?

A

dobule
the oute layer= pigment layer of retina
the inner layer
4/5 post = Raminaing retina
ant 1/5 = Ciliary bodies + Iris

22
Q

When Pigemnt and neural layers of retina are fused ?

A

when Intrarteintal space disappears

23
Q

how is choroid fissure formed ?
when it is closed?

A

By contiunation of Inavagintation of the optic cup
during the 7th week

24
Q

how pupil formed?

A

when choroid fissure is clsoed during 7th week then the mouth of the cup becomes a round opening forming the futeure pupil

25
Q

tHROUGH CHOROID FISSURE …. rEACHES anterior chamber of eye ?

A

Hyaloid artery

26
Q

When choroid fissure closed what happens to optic stalk and its content ?

A

Transofrmed to optic nerve
contents :
Hyaloid artery forming central retinal artery then is is disappear

27
Q

The optic nerve is surrounded by continuation of ,……+,,,,,,,,,,, known as,,,,,,,,,,+,,,,,,,, layer of the nerve

A

Choroid + sclera
Pia-arachnoid + Dural layers of nerve

28
Q

Choriiod fissure contains ?

A

Hyaloid artery
Reuteinig fibers of retina to the brain

29
Q

At the end of the 5th week what happens

A

The eye is fully surrounded by mesehnchyme differentiating into 2 layers :
1-Inner comaparabple to pia = choroid
2-oute comparable to dura = Sclera

30
Q

What happens to mesenchyme of anterior chamber at ending ot week 5 ?>

A

Vaculization forming the ant chamber then :
1-Iridiopupillary meembrance infront of lens +iris
2-Substania propria of cornea

31
Q

Conrea from outsied is formed by?

A

Epithlieal layer by surface ectoderm
Substania propria formed contiunation of sclera : mesoderm
Epithelial layer : linign anterior chamber

32
Q

The irdiopupillary membrane disappears for ?

A

Allowing communication between ant and post chambers of the eye

33
Q

The mesnchyme forms …
and hyaloid vessles…..

A

Viterous body
disappears

34
Q

Cleft in lower part of iris ?

A

Coloboma Iridis

35
Q

Faiulure of closure of choroid fissure ?

A

Coloboma iridis

36
Q

Coloboma irids may extends to ?

A

Iris - Ciliary body -choroid - Retina - optic nerve

37
Q

Congenital catarct is due infection of pregnant women with ,,,,,? from ,,,,, to ……..weeks

A

German measels
4th to 7th

38
Q

CMV and toxoplamosis and urinary tract infections of prenant may cause wicch anmoaly?

A

Mico-OPhtlamia

39
Q

Anopthelamia is accompanid with ?

A

Serious craniocerbreal abnoramlitirs

40
Q

الحمدلله رب العالمين

A

Special sense Anatomy (7 decks)

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