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D1S U2 Anatomy > G6 Eye/Orbit > Flashcards

G6 Eye/Orbit Flashcards

1
Q

Membrane lining inner eyelid

A

Palpebral Conjunctiva

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2
Q

Membrane lining surface of eye

A

Bulbar Conjunctiva

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3
Q

Potential space between these membranes (palpebral conjunctiva and bulbar conjunctiva)

A

Conjunctival Sac

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4
Q

Conjunctival reflections from eyelid to eye

A

Fornices

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5
Q

Create fluid that keeps tears more viscous (evaporates less quickly)

A

Tarsal Glands

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6
Q

Sebaceous gland; stye created on eyelid when this gland is blocked

A

Ciliary Gland

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7
Q

Optic Canal contents:

A

CN II, Ophthalmic a.

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8
Q

Superior Orbital fissure contents:

A

CN III, IV, V1, VI, Ophthalmic vv.

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9
Q

Supraorbital notch/foramen contents:

A

Supraorbital n. (CN V1 branch) and a.

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10
Q

Inferior orbital fissure contents:

A

Infraorbital n and zygomatic n (CN V2 branch) and a.

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11
Q

Infraorbital foramen contents:

A

Infraorbital n. (CN V2 branch) and a.

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12
Q

Ant. Ethmoid foramen contents:

A

Ant ethmoidal n. (CN V1 branch) and a.

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13
Q

Post. Ethmoidal foramen contents:

A

Post. Ethmoid n. (CN V1 branch) and a.

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14
Q

Thin middle layer of ciliary aa. and vorticose vv. (Middle eye)

A

Choroid

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15
Q

Smooth m. around lens for accommodation (middle eye)

A

Ciliary body

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16
Q

Colored smooth m. behind cornea controlling pupil size (middle eye)

A

Iris

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17
Q

Adjustable aperture thru which light enters eye (middle eye)

A

Pupil

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18
Q

Neural layer of eye which receives light rays (inner eye)

A

Retina

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19
Q

Oval region of retina for visual acuity (yellow in color thus only visible with red-free light) (inner eye)

A

Macula Lutea

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20
Q

Most acute vision site at center of macula lutea (inner eye)

A

Fovea Centralis

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21
Q

Regions where CN II and retinal vessels enter/exit (inner eye, blind spot)

A

Optic disc

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22
Q

Largely responsible for refraction of light in the eye (refractive media)

A

Cornea

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23
Q

Focuses light rays and near/distant objects on retina (refractive media)

A

Lens

24
Q

Water filling anterior to lens (refractive media)

A

Aqueous humor

25
Q

Build up of aqueous fluid

A

Glaucoma

26
Q

Gelatinous filling posterior to lens (refractive media)

A

Vitreous humor (body)

27
Q

Produces lacrimal fluid (tears); flows across eye inferomedially to lubricate it (lacrimal apparatus)

A

Lacrimal gland

28
Q

Transports tears to lacrimal sac (lacrimal apparatus)

A

Lacrimal canaliculi

29
Q

Drains tears to nasolacrimal duct (lacrimal apparatus)

A

Lacrimal sac

30
Q

Drains tears thru nasolacrimal canal (under inferior nasal concha) (lacrimal apparatus)

A

Nasolacrimal duct

31
Q

Raises upper eyelid (extraocular muscle)

A

Levator Palpebrae superioris m.

32
Q

Elevates and adducts eye (extraocular muscle)

A

Superior rectus m.

33
Q

Depresses and adducts eye (extraocular muscle)

A

Inferior Rectus m.

34
Q

Abducts eye (extraocular muscle)

A

Lateral Rectus m.

35
Q

Adducts eye (extraocular muscle)

A

Medial Rectus m.

36
Q

Depresses and abducts eye (extraocular muscle)

A

Superior Oblique m.

37
Q

Elevates and abducts eye (extraocular muscle)

A

Inferior Oblique m.

38
Q

Caused by any lesion that leads to a loss of sympathetic function in the head. Characterized by miosis (constricted pupil), ptosis (droopy eyelid), etc.

A

Horner’s Syndrome

39
Q

Innervation to extraocular muscles

A

LR6(SO4)R3

Lateral Rectus CN VI

Superior Oblique CN IV

Rest of the muscles CN III

40
Q

Detects blindness, location of lesion determines deficit

A

Visual Field Testing

41
Q

Results in total blindness in affected eye

A

Optic n lesion

42
Q

Produces loss of peripheral vision

A

Optic chiasm lesion

43
Q

Results in ipsilateral nasal visual field loss and contralateral Temporal visual field loss

A

Optic tract lesion

44
Q

Ciliary ganglion receives p-symp from ____, supplies p-symp to ____ and ____

A

CN III

Ciliary m.
Pupillary Sphincter m.

45
Q

Tests CN II and CN III responses of pupil:

A

Pupillary Light Reflex

46
Q

3 Divisions of CN V1 in Orbit:

A

NFL

Nasociliary n.- ethmoidal n, infratrochlear n, long ciliary nn

Frontal n.- supraorbital n, supratrochlear n

Lacrimal n.- supplies lacrimal gland, conjunctiva

47
Q

Gives rise to all aa of eye

A

Ophthalmic a.

48
Q

Supplies outer and middle layers of eye (artery)

A

Posterior Ciliary aa

49
Q

Supplies inner layer of retina (artery)

A

Central Retinal a.

50
Q

Supply ant cranial fossa, nose, sinuses (artery)

A

Ethmoidal aa.

51
Q

Supplies central region of forehead (artery)

A

Supraorbital a.

52
Q

Supplies medial region of forehead (artery)

A

Supratrochlear a.

53
Q

Supplies lacrimal gland (artery)

A

Lacrimal a.

54
Q

Drains blood from upper medial orbit (most drainage thru here), will anastomose with facial v and drain into cavernous sinus

A

Superior Ophthalmic v.

55
Q

Drains from lower medial orbit, will anastomose with facial v and drain into cavernous sinus

A

Inferior Ophthalmic v.

56
Q

Drains from retina into cavernous sinus

A

Central Retinal v.

57
Q

Drains from vascular layer of eye into sup/inf ophthalmic vv

A

Vorticose vv.

D1S U2 Anatomy (13 decks)

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