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SP2017 Anatomy Exam#2 > Lecture 7- Eye and Orbit > Flashcards

Lecture 7- Eye and Orbit Flashcards

1
Q

The… is the membrane lining inner eyelid

A

palpebral conjunctive

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2
Q

The… is the membrane lining surface of eye

A

bulbar conjunctiva

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3
Q

The… is the potential space between the palpebral and bulbar conjuntiva

A

conjunctival sac

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4
Q

The… are the conjunctival reflections from eyelid to eye

A

fornices

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5
Q

Orbicularis oculi is innervated by…

A

CNVII

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6
Q

Deep to orbicularis oclui is dense connective tissue which is known as the… which is an extension of the…

A
  • orbital septum

- periosteum

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7
Q

Dense connective tissue that offer support the eyelids are the… and…

A

superior tarsus and inferior tarsus

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8
Q

2 types of glands of the eyelids

A

tarsal and ciliary glands

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9
Q

The tendon of… inserts onto superior tarsus

A

levator palpebrae superioris muscle

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10
Q

The… attaches to the zygomatic bone and the… attaches to the maxilla bone and these both provide an anchor for the superior and inferior tarsus

A

lateral palpebral ligament

medial palpebral ligament

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11
Q

Lacrimal gland innervation: preganglionic parasympathetic fibers come from the… nerve which is a branch from facial (CNVII) and it travels with … through the pterygoid canal. After the canal it synapses at the…

A
  • greater petrosal
  • deep petrosal n.
  • pterygopalatine ganglion
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12
Q

After greater petrosal synpases at the pterygopalatine ganglion, the postsynaptic parasympathetic fibers hitch a ride on… , … , and finally on … to the lacrimal gland

A
  • Maxillary (V2)
  • Zygomatic n.
  • Lacrimal n. (branch of V1)

The sympathetic fibers follow this same path but DO NOT synapse in the pterygopalatine ganglion

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13
Q

For the head where are the presynaptic sympathetic neurons are located in…

A

T1

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14
Q

Presynaptic Sympathetic fibers synapse where?

A

superior cervical ganglion

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15
Q

The postsynaptic sympathetic fibers (after superior cervical ganglion) are going to travel in the… up into skull and then branch off as the … nerve

A
  • carotid plexus

- deep petrosal

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16
Q

The nerve of the pterygoid canal carries… from greater petrosal nerve and carries … from deep petrosal nerve

A
  • preganglionic parasympathetic fibers

- postsynaptic sympathetic fibers

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17
Q

What transmits through the optic canal?

A

CNII and opthalmic artery (branch of ICA)

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18
Q

What transmits through the superior orbital fissure?

A

CN III, IV, V1, VI and opthalmic vv.

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19
Q

What transmits through the Supraorbital notch/foramen?

A

Supraorbital n. (branch of V1) and artery

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20
Q

What transmits through the Inferior orbital fissure?

A

Infraorbital nerve and Zygomatic nerve (branch of V1) and artery

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21
Q

What transmits through the Infraorbital foramen?

A

Infraorbital n. (branch of V2) and artery

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22
Q

What transmits through the anterior ethmoidal foramen?

A

Anterior ethmoidal nerve (branch of V1) and artery

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23
Q

What transmits through the posterior ethmoidal foramen?

A

Posterior ethmoidal nerve (branch of V1) and artery

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24
Q

The outer layer of the eye is called the… tunic

A

fibrous

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25
The outer layer of the eye is avascular and it has 2 main anatomical parts, the outer portion is the... which is dense connective tissue and muscle insert onto it.
sclera
26
The anterior portion of the outer layer of the eye is called the... which is the transparent anterior feature
Cornea
27
The main portion of the middle layer of the eye is called the... which is a thin layer of ciliary aa. and vorticose vv.
choroid
28
The middle eye contains the... which is a smooth muscle around lens for accomodation
ciliary body
29
The middle eye contains the... which is the colored smooth muscle behind cornea which controls pupil size
Iris
30
The middle eye contains the... which is the adjustable aperture through which light enters
pupil
31
The spincter pupillae is under... innervation and it is organized in a .. shape and will ... the amount of light coming in
- parasympathetic - circular - decrease
32
The dilator pupillae is under ... innervation and is organized .... and will ... the amount of light coming in
- -sympathetic - radially - increase
33
The sphincter pupillae and dilator pupillae are under... and... control
autonomic and emotional
34
The sphincter pupillae and dilator pupillae (which are associated with the middle eye) are under... and... control
autonomic and emotional
35
The... contains the ciliary arteries and the vorticose veins
choroid
36
The vorticose vv. of the eye drain into ...
opthalmic v.
37
The... is the main feature of the inner eye and is the neural layer of eye which recieves light rays
Retina
38
The... is a feature of the inner eye which is an oval region of retina for visual acuity (yellow in color thus only visible with red-free light)
Macula lutea | **cones only**
39
The ... is an inner eye feature and is the most acute vision site at center of macula
Fovea centralis
40
The... is a part of the inner eye and is the region where CNII and retinal vessels enter/exit. "Blindspot"
Optic disc | **no sensory receptors**
41
The... is largely responsible for refraction of light in the eye
cornea
42
4 components of refractive media of the eye
cornea lens aqueous humor vitreous humor
43
The... focuses light rays and near or distant objects on retina
lens
44
The... is a watery filling anterior to the lens
aqueous humor
45
The... is gelatinous filling posterior to lens
vitreous humor
46
4 inner eye features
retina macula lutea fovea centralis optic disc
47
4 middle eye features
choroid ciliary body iris pupil
48
4 components of the lacrimal apparatus
lacrimal gland lacrimal canaliculi lacrimal sac nasolacrimal duct
49
The... gland produces lacrimal fluid; flows inferomedially to lubricate it
lacrimal
50
The... transports tears to lacrimal sac
lacrimal canaliculi
51
The... drains tears to nasolacrimal duct
lacrimal sac
52
The... duct drains tears through ..canal (under inferior nasal concha)
nasolacrimal
53
Action of levator palpebrae superioris muscle
raises upper eyelid
54
Action of superior rectus
elevates and adducts eye
55
Action of inferior rectus
depresses and adducts eye
56
Action of lateral rectus
abducts eye
57
Action of medial rectus
adducts eye
58
Action of superior oblique
depresses abd abducts eye
59
Action of inferior oblique
elevates and abducts eye
60
What CN innervates all the extraocular muscles (except lateral rectus and superior oblique)
CNIII
61
What CN innervates lateral rectus?
CNVI
62
What CN innervates superior oblique
CNIV
63
Eye can be placed... to test lateral and medial rectus mm.
neutrally
64
Eye must be... to test superior and inferior rectus mm.
abducted
65
Eye must be... to test superior and inferior oblique
adducted
66
... is caused by any lesion that leads to a loss of sympathetic function in the head
horners syndrome
67
Signs for horners syndrome
- partial ptosis - pupillary constriction - absence of sweating on ipsilateral side of face and neck
68
2 visual fields:
temporal retina | nasal retina
69
... vision remains ipsilateral. ... vision crosses
- nasal | - temporal
70
... lesion results in total blindness in affected eye
optic nerve
71
... lesion produces loss of peripheral vision
optic chiasm
72
... lesion results in ipsilateral nasal visual field loss and contralateral temporal visual field loss
optic tract
73
The presynaptic parasympathetic fibers from CNIII synapes at... which then sends short ciliary nn. to posterior eye to supply...
- ciliary ganglion - ciliary m. - pupillary sphincter m.
74
Pupillary dilator muscle recieves sympathetic innervation via ... and they synapsed at...
- internal carotid plexus | - superior cervical ganglion
75
The 3 divisions of CNV1 in the orbit
Nasociliary n Frontal n. Lacrimal n.
76
The ...nerve is a branch of CNV1 in the orbit that runs more medial and gives off ethmoidal, infratrochlear n. and long ciliary nn. (sensory and symp) to posterior eye
-Nasociliary
77
The... nerve is a branch of CNV1 in the orbit (runs on top of levator palpebrae superioris) which gives off supraorbital and supratrochclear nn.
Frontal
78
The .... nerve is a branch of CNV1 in the orbit that runs laterally and supplies lacrimal gland and conjunctive
lacrimal
79
The ... artery gives rise to all aa. of the eye. How many?
opthalmic | 6
80
6 arteries of the eye
1. posterior cilliary aa. 2. central retinal a. 3. ethmoidal aa. 4. supraorbital a. 5. supratrochlear a. 6. lacrimal a.
81
The ... arteries supply outer and middle layers of eye
posterior ciliary aa.
82
The ... artery supplies inner layer of retina and is within optic nerve
central retinal
83
The ... arteries supply the anterior cranial fossa, nose and sinues
ethmoidal
84
The... artery supplies central region of forehead
supraorbital
85
The... artery supplies medial region of forehead
supratrochlear
86
The... artery suppleis lacrimal gland
lacrimal
87
The... vein drains from the upper medial orbit
superior opthalmic
88
The ... vein drains from the lower medial orbit
inferior opthalmic v.
89
Superior and inferior opthalmic both anastomose with... and drain into ...
- facial vein | - cavernous sinus
90
The... vein drains retina to cavernous sinus
central retinal
91
The... vv. drain from vascular layer of eye and drains into superior and inferior opthalmic vv.
vorticose

SP2017 Anatomy Exam#2 (14 decks)

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