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Shawn Study Cards > Study for In-Service > Flashcards

Study for In-Service Flashcards

1
Q

What is Dermatochalasis?

A

Excesss eyelid skin

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2
Q

What is the technical term for excess eyelid skin?

A

Dermatochalasis

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3
Q

What is Blepharochalsis?

A

Thin eyelid skin secondary to recurrent edema

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4
Q

What is the technical term for thin skin of the eyelids often caused by recurrent edema?

A

Blebharochalasis

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5
Q

What is Steatoblepharon?

A

Fat protrusions secondary to septal attenuation

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6
Q

What is the fat protrusion of the eyelid caused by septal attenuation called ?

A

Steatoblepharon

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7
Q

What is Pseudoblepharoptosis?

A

Normal lid position but with a ptotic appearance due to brow position and excess skin

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8
Q

What is the technical term for a normal lid position with ptotic appearance due to brow position and excess skin?

A

Pseudoblepharoptosis

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9
Q

How thick is the eyelid skin?

A

0.5 - 0.7 mm

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10
Q

What are the 3 Lamella of the Eyelid

A

Anterior, Middle, Posterior

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11
Q

What are the components of the anterior lamella?

A

Skin, Orbicularis Oculi

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12
Q

What are the component portions of the orbicularis oculi

A

PreTarsal, PreSeptal, and Orbital Portions

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13
Q

Which components of the orbicularis oculi are involved in voluntary lid closure?

A

Orbital Portion

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14
Q

Which components of the orbicularis oculi are involved in involuntary lid closure?

A

PreTarsal and PreSeptal Portions

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15
Q

What is the dual innervation of the orbicularis oculi

A

Temporal and Zygomatic Branches of the Facial Nerve

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16
Q

What are the components of the middle lamella?

A

The PreSeptal Fat, The Orbital Septum, and the Orbital or Post-Septal Fat.

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17
Q

How does the preseptal fat differ between the upper and lower eyelid?

A

The Upper eyelid has the Retro-Orbicularis Oculi Fat - the ROOF; The Lower Eyelid has the Suborbicularis Oculi Fat or SOOF

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18
Q

Which eyelid has the ROOF?

A

Upper Eyelid

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19
Q

Which eyelid has the SOOF?

A

Lower Eyelid

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20
Q

What is the ROOF of the Eyelid?

A

Retro-Orbicularis Oculi Fat

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21
Q

What is the SOOF of the Eyelid?

A

The Suborbicularis Oculi Fat

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22
Q

What is the Orbital Septum

A

The Anatomic Boundary between the Eyelid and the Orbit

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23
Q

From what structures does the Orbital Septum Arise

A

The Periosteal confluence of the superior and inferior orbital rim

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24
Q

In the upper eyelid what does the Orbital Septum Fuse With?

A

The Levator Aponeurosis

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25
Q

In the Lower Eyelid what does the Orbital Septum Fuse With?

A

The Capsulopalpebral Fascia

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26
Q

What are the 2 Components of the Orbital/Post-Septal Fat present in the Upper Eyelid?

A

The Nasal and Central Components

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27
Q

What are the 3 Components of the Orbital/Post-Septal Fat Present in the Lower Eyelid?

A

The Medial, Central, and Lateral

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28
Q

What separates the Nasal and Central Fat Compartments of the Upper Lid?

A

The Trochlea and Superior Oblique Tendon

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29
Q

What separated the Medial and Central Fat Compartments of the Lower Lid?

A

The Inferior Oblique Muscle

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30
Q

What are the components of the Posterior Lamella?

A

The Tarsal Plate, The Lid Retractors, and the Conjunctiva

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31
Q

What is the Tarsal Plate?

A

A cartilaginous structure of dense connective tissue which provides structural support and rigidity to the eyelid

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32
Q

How thick is the tarsal plate of the Eyelid?

A

~1 mm

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33
Q

How long is the tarsal plate of the Eyelid?

A

~25 mm

34
Q

How tall is the superior tarsal plate of the Eyelid?

A

~10 mm tall

35
Q

How tall is the inferior tarsal plate of the Eyelid?

A

~4 mm tall

36
Q

What are the Upper Lid Retractors of the Eyelid?

A

The Levator Palpebrae Superioris and Mueller’s Muscle

37
Q

What is the Innervation of the Levator Palpebrae Superioris?

A

CNIII

38
Q

What is the Innervation of Mueller’s Muscle?

A

Sympathetic Nervous System

39
Q

What are the Lower Lid Retractors of the Eyelid?

A

The Capsulopapebral Fascia and the Inferior Tarsal Muscle

40
Q

What is the Innervation of the Interior Tarsal Muscle of the Eyelid?

A

Sympathetic Nervous System

41
Q

What is the Palpebral Conjunctiva

A

The Posterior Surface of theEyelids

42
Q

What is the Bulbar Conjunctival?

A

The Anterior Surface of the Globe of the Eye

43
Q

Are are the conjunctival fornices?

A

The apices where the palpebral and bulbar conjunctiva

44
Q

To which Lamella does the Tarsal Plate belong?

A

Posterior

45
Q

To which Lamella do the Upper Lid Retractors belong?

A

Posterior

46
Q

To Which Lamella does the Conjunctiva belong?

A

Posterior

47
Q

To which Lamella does the Pre-Septal Fat Belong?

A

Middle

48
Q

To Which Lamella does the Orbital Septum Belong?

A

Middle

49
Q

To which Lamella does the Orbital/Post-Septal Fat Belong?

A

Middle

50
Q

To Which Lamella does the skin of the Eyelid Belong?

A

Anterior

51
Q

To Which Lamella does the Orbicularis Oculi Belong?

A

Anterior

52
Q

What structure is at risk between the nasal and central fat compartments of the upper eyelid?

A

The Trochlea and Superior Oblique Tendon

53
Q

What structure is at risk between the medial and central fat compartments of the lower eyelid?

A

The Inferior oblique muscle

54
Q

What is the origin of the levator palpebrae superioris?

A

The esser wing of the sphenoid - it broadens as an aponeurosis at Whitnall’s ligament

55
Q

What is the insertion of the levator palpebrae superioris?

A

The Superior Tarsis and Dermis

56
Q

What superficial structure is formed by the insertion of the levator palpebrae superioris?

A

The Supratarsal Crease

57
Q

What lid elevation is achieved by the Levator Palpebrae Superioris

A

10-15 mm

58
Q

What is the Origin of Mueller’s Muscle

A

The Deep Surface of the Levator Aponeurosis

59
Q

What is the Insertion of Mueller’s Muscle?

A

The Superior Tarsal Margin

60
Q

What lid elevation is achieved by Mueller’s Muscle?

A

1-2 mm

61
Q

What is the Capsulopalpebral Fascia?

A

A fascial sling acting as the lower lid analogue to the levator aponeurosis

62
Q

What is the Origin of the Capsulopalpebral Fascia?

A

The Inferior Rectus Muscle

63
Q

What is the Path of the Capsulopalpebral Fascia from its origin?

A

Starts at the Inferior Rectus Sheath and then splits at the inferior oblique muscle to reunite at Lockwood’s suspensory ligament

64
Q

What is the insertion of the Capsulopalpebral Fascia?

A

The Inferior Tarsus

65
Q

What is the Inferior Tarsal Muscle?

A

The lower lid analogue to Mueller’s Muscle

66
Q

What is the Origin of the Inferior Tarsal Muscle

A

The Posterior Capsulopalpebral Fascia

67
Q

What is the Insertion of the Inferior Tarsal Muscla

A

The Inferior Tarsal Margin

68
Q

What is the Origin of the Lateral Canthal Tendon

A

The Lateral Margin of the Superior and Inferior Tarsal Plates

69
Q

What is the Insertion of the Lateral Canthal Tendon

A

Whitnall’s Tubercle

70
Q

What is Whitnall’s Tubercle

A

A bony prominence located 5 mm within the lateral orbital rim

71
Q

What is the Origin of the Medial Canthal Tendon

A

Medial Margin of the Superior and Inferior Tarsal plates

72
Q

What is the Insertion of the Medial Canthal Tendon

A

Tripartite - Superficial Head inserts on the frontal process of the maxilla; the Deep head inserts on the posterior lacrimal crest; the vertial head inserts on the orbital process of the frontal bone

73
Q

Which head of the medial canthal tendon provides the majority of support?

A

The Superficial head

74
Q

Which head of the medial canthal tendon has a function in the tear pump mechanism?

A

The Vertical Head

75
Q

What are the Three Heads of the Medial Canthal Tendon?

A

The Superficial, Deep, and Vertical Heads

76
Q

What is the primary blood supply of the upper lid of the eyelid?

A

The Ophthalmic Artery - Internal Carotid

77
Q

What is the primary blood supply of the lower lid of the eyelid?

A

The Facial Artery - External Carotid

78
Q

What are the 2 vascular arcades of the eyelid?

A

The Marginal Arcade and the Peripheral Arcade.

79
Q

What provides sensory innervation to the upper eyelid?

A

The Ophthalmic Division (V1) of CNV

80
Q

What provides sensory innervation to the lower eyelid?

A

The Maxiallary Division (V2) of CNV

81
Q

What are the Soft Tissue Layers of the Scalp?

A

The Skin, Subcutaneous Tissue, Aponeurosis/Galea, Loose Areolar Tissue, Pericranium

Shawn Study Cards (1 decks)

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