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Gross II > Test 2: Orbit, Ear > Flashcards

Test 2: Orbit, Ear Flashcards

(87 cards)

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1
Q

What shape is the eye socket?

A

Pyramidal

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2
Q

4 surfaces of orbit?

A

roof, floor, medial wall, lateral wall

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3
Q

7 bones that form orbital surface?

A

frontal, sphenoid, maxilla, zygomatic, lacrimal, ethmoid, palantine bone

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4
Q

orbital roof is formed by?

A
  1. orbital process (plate) of the frontal bone

2. lesser wing of Sphenoid

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5
Q

floor of orbit is formed by?

A
  1. orbital process of Maxilla
  2. Zygomatic bone
  3. Orbital process of Palantine bone
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6
Q

The orbital process of Maxilla is? (texture)

A

very thin and fragile

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7
Q

medial wall of the orbit is formed by?

A
  1. Frontal bone
  2. Lacrimal bone
  3. Orbital process of Ethmoid bone
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8
Q

Lateral wall of the orbit is formed by?

A
  1. Zygomatic bone

2. Greater wing of Sphenoid

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9
Q

Optic canal goes to?

A

cranial cavity

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10
Q

optic canal opens up at?

A

apex

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11
Q

optic canal is associated with what part of what bone?

A

Lesser Wing of Sphenoid

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12
Q

Optic canal contains?

A

Optic nerve and Ophthalmic artery

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13
Q

Superior orbital fissure goes to?

A

cranial cavity

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14
Q

superior orbital fissure is bordered by?

A

lesser and greater wings of Sphenoid

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15
Q

Superior orbital fissure contains?

A

CN III, IV, VI, V1 (ophthalmic) and superior ophthalmic veins

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16
Q

Inferior orbital fissure goes to?

A

infratemporal and sphenopalantine fossa

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17
Q

Inferior orbital fissure contains?

A

infraorbital n.a.v.

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18
Q

supraorbital foramen contains?

A

supraorbital n.a.v

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19
Q

infraorbital foramen contains?

A

infraorbital n.a.v

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20
Q

infraorbital foramen leads to the floor of the orbit where it is continuous with?

A

the infraorbital groove (sulcus)

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21
Q

infraorbital foramen leads to ?

A

floor of the orbit

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22
Q

ethmoidial foramen contains?

A

ethmoidial n.a.v.

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23
Q

the medial wall of the ethmoidial foramen connects?

A

ethmoid to aircells

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24
Q

nasolacrimal canal goes to?

A

nasolacrimal duct

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25
The thickest wall of the orbit is?
Lateral wall
26
Which wall is exceptionally thin and fragile?
Medial wall
27
Medial wall separates orbit from?
ethmoid air cells and nasal cavity
28
is the roof of the orbit thin?
yes
29
the roof separates the orbit from the?
Anterior cranial fossa
30
The floor is thin and separates the orbit from the?
maxillary sinus
31
Palpebra
eyelid
32
cilia
eyelashes
33
supercillia
hair on eyelashes
34
palpebral fissure
opening between palpebrae
35
describe the skin of the palpebra
thin and delicate
36
skin of the Palpebra covers what?
the palpebral part of Orbicularis Oculi
37
Canthi
edges of palpebral fissure
38
Lateral Canthus aka?
Temporal Canthus
39
Medial Canthus aka?
Nasal Canthus
40
Medial (nasal) Canthus includes?
1. Lacrimal caruncle | 2. Lacrimal puncta
41
lacrimal caruncle
fleshy prominance (at medial canthus) which includes sweat and sebecious glands
42
lacrimal papilla
bump on superior and inferior palpebra
43
lacrimal puncta
pin hole size opening that permits the drainage of lacrimal fluid from cornea
44
Tarsal plates are located deep to?
skin and muscle of eyelids
45
Tarsal plates are sheets of?
fibrous connective tissue
46
Tarsal plates help to maintain shape of?
eyelids
47
Tarsal glands aka?
Meibomian Glands
48
Tarsal glands are embedded in?
tarsal plates
49
Tarsal glands can be seen if the eyelids are?
inverted
50
Tarsal glands are what type of glands?
sebaceous glands
51
Tarsal glands secrete what?
lipid like secretions
52
Tarsal glands open up along the margins of?
the eyelids
53
Tarsal glands secretions spread where?
secretions spread along margins of eyelids
54
Tarsal glands are important bc? (2)
1. lubricate margins | 2. helps increase surface tension along margins
55
tarsal glands increasing surface tension along margins encourages?
Lacrimal fluid to stay on cornea
56
Glands of Moll are?
small modified sweat glands
57
Glands of Zeis
small modified sebaceous glands
58
Sty aka?
hordeolum
59
Sty
infected gland of eyelid
60
Chalazion
plugged gland (cyst like structure)
61
Conjunctiva
transparent covering of mucous membrane
62
Conjunctiva has 2 portions
1. Palpebral portion | 2. Bulbar portion
63
Palpebral portion of the conjunctiva ?
covers inner surface of eyelid
64
Bulbar portion reflects onto
bulb or eyeball
65
Bulbar portion is continuous with?
outer cornea
66
recesses of conjunctiva
Fornices (superior and inferior)
67
Fornicies
where the palpebral conjunctiva meets the bulbar conjunctiva
68
Lacrimal gland looks like?
almond
69
Lacrimal gland location
superolateral position of the anterior orbit
70
Lacrimal gland secretes
Lacrimal fluid
71
Lacrimal gland secretes lacrimal fluid through?
series of ducts into cornea
72
Crying is called?
Lacrimation
73
Lacrimal gland secretes what fluid?
serious/ watery fluid
74
Lacrimal gland function
circulate fluid across corneal surface and across inner eyelids
75
What moistens, cleans, lubercates and protects cornea surface?
lacrimal fluid
76
Lacrimal gland innervation
parasympathetic and sympathetic
77
Lacrimal gland Parasympatheric fibers are?
secretomotor
78
Lacrimal gland Parasympatheric, secretomotor fibers control?
lacrimation
79
Lacrimal glands: Preganglionic parasympathetic fibers ?
CN VII branch (Greater Petrosal n.)
80
Lacrimal gland: postganglionic parasympathetic fibers associated with?
Sphenopalitine/ pteropalantine ganglion
81
Lacrimal gland sympathetic fibers go to?
aa. of the gland
82
Lacrimal gland sympathetic fibers are?
vasomotor innervation
83
Lacrimal gland sympathetic fibers: postganglionic sympathetic neurons associated with?
Superior Cervical ganglion of the sympathetic chain
84
Nasolacrimal Conducting System secretes?
lacrimal fluid
85
Nasolacrimal Conducting System secretes lacrimal fluid by?
by a series of small ducts onto superolateral eyeball
86
Nasolacrimal Conducting System: blinking does what to lacrimal fluid
distributes it towards the medial canthus
87
lacrimal fluid drains off what after being distributed towards medial canthus?
cornea

Gross II (1 decks)

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