Anatomy of the Orbit Flashcards

1
Q

Name components of the eye layer at A, B and C

A

A - Macula

B - Optic disc

C - Retina

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2
Q

Name veins A and B

A

A - Superior opthalmic vein

B - Inferior opthalmic vein

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3
Q

Name arteries A and B

A

A - Ciliary arteries

B - Central artery of the retina

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4
Q

Name structure A

A

A - Superior tarsus

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5
Q

Name bone A

A

A - Nasal bone

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6
Q

Name the junction at A

A

A - Limbus (Corneoscleral junction)

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7
Q

Name arteries A and B

A

A - Opthalmic artery

B - Internal carotid artery

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8
Q

Name bone A

A

A - Ethmoid bone

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9
Q

Name structures A and B

A

A - Temporal retina (of right eye)

B - Optic chiasm

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10
Q

Name structures A and B

A

A - Scleral venous sinus

B - Ciliary body

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11
Q

Name structures A and B

A

A - Optic disc

B - Optic nerve

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12
Q

Name muscle A

A

A - Medial rectus

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13
Q

Name structure A

A

A - Lacrimal gland

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14
Q

Name structures A, B and C

A

A - Frontal bone (orbital plate)

B - Ethmoid bone (orbital plate)

C - Infraorbital foramen

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15
Q

Name ligaments A and B

A

A - Superior tarsus ligament

B - Inferior tarsus ligament

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16
Q

Name muscle A

A

A - Inferior rectus

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17
Q

Name structures A, B and C

A

A - Optic nerve

B - Optic disc

C - Retina

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18
Q

Name bone A

A

A - Maxilla

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19
Q

Name arteries A and B

A

A - Opthalmic artery

B - Internal carotid artery

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20
Q

Name muscles A and B

A

A - Superior oblique

B - Inferior oblique

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21
Q

Name muscle A

A

A - Superior rectus

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22
Q

Name structures A, B and C

A

A - Conjunctival fornix

B - Lacrimal lake

C - Inferior lacrimal papilla and punctum

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23
Q

Name structures A and B

A

A - Common tendinous ring

B - Trochlea

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24
Q

Name structures A, B and C

A

A - Canaliculi

B - Lacrimal sac

C - Nasolacrimal duct

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25
Q

Name bone A

A

A - Frontal bone

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26
Q

Name structures A, B and C

A

A - Supraorbital notch

B - Optic canal

C - Superior orbital fissure

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27
Q

Name the angle at A

A

A - Iridocorneal angle

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28
Q

Name layers A and B of the eye

A

A - Sclera

B - Cornea

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29
Q

Name the layers of the eye at A, B and C

A

A - Fibrous layer

B - Uvea (vascular layer)

C - Inner layer of eyeball (retina)

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30
Q

Name the junction at A

A

A - Limbus (corneoscleral junction)

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31
Q

Name structure A and chambers B and C

A

A - Cornea

B - Anterior chamber

C - Posterior chamber

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32
Q

Name muscle A

A

A - Inferior oblique

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33
Q

Name chamber A and structure B

A

A - Posterior chamber

B - Pupil

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34
Q

Name bone A

A

A - Zygomatic bone

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35
Q

Name muscles A to D

A

A - Medial rectus

B - Superior rectus

C - Inferior rectus

D - Lateral rectus

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36
Q

Name bone A

A

A - Sphenoid bone

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37
Q

Name muscle A

A

A - Superior oblique

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38
Q

Name segments A and B and structure C

A

A - Posterior segment (Vitreous body)

B - Anterior segment

C - Lens

39
Q

Name arteries A and B

A

A - Nasal cavity branches (of opthalmic artery)

B - Forehead (scalp) branches (of opthalmic artery)

40
Q

Name structures A to D

A

A - Tendon of levator palpebrae superioris

B - Orbicularis oculi

C - Tarsal gland

D - Superior tarsus

41
Q

Name area A

A

A - Maxillary sinus

42
Q

Name structures A, B and C

A

A - Macula

B - Optic disc

C - Central artery and vein of retina

43
Q

Name the parts of the muscle at A and B

A

A - Orbital part

B - Palpebral part

(muscle is Orbicularis oculi)

44
Q

Name structure A within the sphenoid bone

A

A - Optic canal

45
Q

What is the term given to the light at A

A

A - Corneal reflection

46
Q

Name tendon A and membranous sheet B

A

A - Tendon of levator palpebrae superioris

B - Orbital septum

47
Q

Name muscle A

A

A - Orbicularis oculi

48
Q

Name veins A and B

A

A - Forehead (scalp) vein

B - Facial vein

49
Q

Name bone A

A

A - Lacrimal bone

50
Q

Name components of the eye layer at A, B and C

A

A - Ciliary body

B - Iris

C - Choroid

51
Q

Name ligaments A and B

A

A - Lateral palpebral ligament

B - Medial palpebral ligament

52
Q

Name structures A, B and C

A

A - Photoreceptors

B - Ganglion cells

C - Axons (of ganglion cells)

53
Q

Name area A

A

A - Fovea centralis (in macula)

54
Q

Name muscle A

A

A - Levator palpebrae superioris

55
Q

Which structure is located posteriorly at A?

A

A - Lacrimal gland

56
Q

Name vessels A and B

A

A - Central artery of the retina

B - Central vein of the retina

57
Q

Name structures A and B

A

A - Iris

B - Cornea

58
Q

Name muscle A

A

A - Lateral rectus

59
Q

Name structures A, B and C

A

A - Internal carotid artery

B - Opthalmic artery

C - Optic nerve

60
Q

Which nerves are responsible for sensation at points A, B and C?

A

A - Opthalmic nerve (CN V1)

B - Maxillary nerve (CN V2)

C - Mandibular nerve (CN V3)

61
Q

Name the structure at A and nerve at B

A

A - Trigeminal ganglion

B - Opthalmic nerve (CN V1)

62
Q

Name nerve A

A

A - Facial nerve (CN VII)

63
Q

Name structures A and B

A

A - Superior cervical ganglion

B - Peri-arterial sympathetic plexus

64
Q

Name nerve A

A

A - Oculomotor nerve (CN III)

65
Q

Name nerves A and B

A

A - Superior division of CN III

B - Inferior division of CN III

66
Q

Name structure A

A

A - Dilator pupillae muscle

67
Q

Name structure A

A

A - Sphincter pupillae muscle

68
Q

Name structure A

A

A - Suspensory ligaments of lens

69
Q

Name structure A

A

A - Ciliary muscle

70
Q

Name meningeal layers A, B and C

A

A - Dura mater

B - Arachnoid

C - Pia

71
Q

Name space A and layers B, C and D

A

A - Subarachnoid space

B - Dura mater

C - Arachnoid

D - Pia

72
Q

Name structures A to D

A

A - Third ventricle

B - Left lateral ventricle

C - Right lateral ventricle

D - Fourth ventricle

73
Q

Name structures A, B and C

A

A - Central canal

B - Subarachnoid space

C - Superior sagittal sinus

74
Q

Name structures A and B

A

A - Cerebral aqueduct

B - Pituitary gland

75
Q

Name structures A and B

A

A - Choroid plexus

B - Arachnoid granulations

76
Q

Name structures A to D

A

A - Optic nerve

B - Dura

C - Arachnoid

D - Pia

77
Q

Name structures A, B and C

A

A - Falx cerebri

B - Tentorium cerebelli

C - Tentorial notch

78
Q

Name nerves A, B and C

A

A - Abducens nerve

B - Trochlear nerve

C - Oculomotor nerve

79
Q

Name structures A, B and C

A

A - Tentorium cerebelli

B - Tentorial notch

C - Tentorial cerebelli

80
Q

Name structure A

A

A - Falx cerebri

81
Q

Name structures A and B

A

A - Diaphragma sellae

B - Infundibulum

82
Q

Where does sympathetic innervation exit the spinal nerve?

A

T1-L2 spinal nerves

83
Q

Where do parasympathetic axons leave the CNS?

A

CN III, VII, IX, X and via sacral spinal nerves

84
Q

What is the innervation of the lateral rectus muscle?

A

CN VI- abducens nerve

85
Q

What is the innervation of the superior oblique muscle?

A

CN IV- trochlear nerve

86
Q

What is the mnemonic for the innervation of the orbital muscles?

A

LR6 SO4 AO3

87
Q

At what vertebral level does the subarachnoid space end?

A

L2

88
Q

What is the primary and secondary action of the superior rectus?

A

Primary: elevation

Secondary:medial rotation and adduction

89
Q

What is the primary and secondary action of the inferior rectus?

A

Primary: depression

Secondary: lateral rotation and adduction

90
Q

What is the action of the medial rectus?

A

Adduction

91
Q

What is the action of the lateral rectus?

A

Abduction

92
Q

What is the action of the superior oblique muscle?

A

Medial rotation, depression and abduction

93
Q

What is the action of the inferior oblique?

A

Lateral rotation, elevation, abduction

94
Q

What is the presentation of oculomotor nerve palsy?

A

“Out and down” appearance of the affected eye