Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Ophthalmology > Anatomy of the Orbit > Flashcards

Anatomy of the Orbit Flashcards

1
Q

What bones make up the oribtal rim?

A

maxilla; zygoma; frontal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What additional bones make up the floor of the orbit?

A

ethmoid; lacrimal; sphenoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is found in the sphenoid in the floor of the orbit?

A

the superior and inferior orbital fissures and the optic canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the bones most likeely to # in the orbit?

A

ethmoid and maxillary plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does the eyelid form that curves onto the eyeball?

A

inner conjunctiva

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the tarsal plate?

A

slightly thickened area of connective tissue within the eyelid that contains tarsal glands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the longitudinal muscle of the eyelid?

A

levator palpebrae superious

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What nerve supplies levator palpebrae superious

A

oculomotor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do tears travel across the cornea?

A

from superolateral to inferomedial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the holes that tears flow into?

A

puncta lacrimalia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Where do tears go once through the puncta lacrimalia?

A

canaliculi into the lacrimal sac–lacrimal duct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What do tears drain into in the nose?

A

inferior meatus of the lateral wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the CN with parasympathetic innervation?

A

III, VII, IX and X

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What nerve supplies the lacrimal gland?

A

CNVII

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the 3 layers of the eyeball?

A

outer fibrous; middle vascular pigmented; inner nervous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What makes up the outer fibrous layer of the eyeball?

A

sclera and cornea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What makes up the middle vascular pigmented layer of the eyeball?

A

choroid; ciliar body and iris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What makes up the inner nervous layer of the eyeball?

A

retina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What joins the ciliary body to the lens?

A

suspensory ligament of lens

20
Q

What happens when the ciliary muscles are relaxed?

A

lens doesnt let much light in

21
Q

What happens when the ciliary muscles are contracted?

A

the lend becomes fatter and lets more light in

22
Q

What does the iris consist of?

A

smooth muscle fibres

23
Q

What are the 2 muscles that the iris has?

A

sphincter pupillae and dilator pupillae

24
Q

How are the sphincter pupillae muscle fibres arranged?

A

concentric

25
Q

How are the dilator pupillae muscle fibres arranged?

A

radial

26
Q

What is the innervation to the sphincter pupillae muscle?

A

CN III- parasympathetic

27
Q

What is the innervation to dilator pupillae?

A

sympathetic supply- internal carotid plexus

28
Q

What is the area of the retina that allows the most focused vision?

A

macula lutea with fovea centralis

29
Q

What are the 6 extrinsic muscles of the eye?

A

superior and inferior obliques; superior, inferior, medial and lateral rectus muscles and lecator palpebrae supeiroris

30
Q

What does the superior rectus do?

A

up and in

31
Q

What does the inferior rectus do?

A

depresses and in

32
Q

What does the lateral rectus do?

A

abducts the eye

33
Q

Waht does the medial rectus do?

A

adducts the eye

34
Q

What is the supply to most of the muscles of the eye?

A

CNIII

35
Q

What nerve supplies lateral rectus?

A

abducens

36
Q

What nerve supplies superior oblique?

A

trochlear nerve

37
Q

What does the superior oblique pass around?

A

the trochlea (pulley)

38
Q

What does inferior oblique do?

A

up and out

39
Q

What does superior oblique do?

A

down and out

40
Q

How is superior rectus tested?

A

up and out

41
Q

How is inferior rectur tested?

A

down and out

42
Q

How is superior oblique test?

A

down and in

43
Q

How is inferior oblique tested?

A

up and in

44
Q

What makes up the inferolateral oribtal margin?

A

zygoma

45
Q

Waht is ptosis?

A

droopy eyelid

Ophthalmology (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions