Brainscape's Knowledge GenomeTM

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


See full index

Anatomy > 45. Orbit > Flashcards

45. Orbit Flashcards

1
Q

Function of suspensory ligaments?

A

Support eyeball

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

Function of check ligaments?

A

Restrict MR and LR

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

What are the two fluid filled spaces in the eye? Where are they found in relation to the lens?

A

Aqueous humor - anterior to lens

Vitreous - posterior

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

Function of aqueous humor?

A

Maintain intra-occular pressure

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

Where is the aqueous humor made?

A

Ciliary body

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

Where does the aqueous humor drain?

A

Corneo-scleral junction

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

Function of vitreous humor?

A

Support retina

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

Intraocular muscles? (3)

A

Dilator pupillae
Sphincter pupillae
Ciliary muscles

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

Innervation of dilator pupillae?

A

Sympathetic (carried on blood vessels)

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

Innervation of sphincter pupillae?

A

Parasympathetic - CNIII

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

Function of ciliary muscles?

A

Change shape of lens for accommodation

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

Innervation of ciliary muscles?

A

CNIII

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

What are the extraoccular muscles? (7)

A 
Levator palpebrae superioris
MR
LR
SR
IR
SO
IO
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which extraoccular muscles attach from the annular ring to the sclera?

A

SR
IR
MR
LR

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

Attachment of SO?

A

Lesser wing of sphenoid

To sclera

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

Attachment of IO?

A

Orbital floor

To sclera

17
Q

In terms of the axis of the eye, how can the eye muscles move the eye in more than one direction?

A

Axis of orbit (bony cavity) and optical axis (line of gaze) are DIFFERENT

18
Q

Action levator palpebrae?

A

Raise upper eyelid

19
Q

Action SR?

A

Elevation
Adduction
Intorsion

20
Q

Action IR?

A

Depression
Adduction
Extorsion

21
Q

Action MR?

A

Adduction

22
Q

Action LR?

A

Abduction

23
Q

Action SO?

A

Intorsion
Depression
Abduction

24
Q

Action IO?

A

Extorsion
Elevation
Abduction

25
Q

Innervation of extraoccular muscles?

A

LR6 SO4 AO3

26
Q

Branches of CN V1?

A

Lacrimal

Frontal –> supraorbital and supratrochlear

Nasociliary –> ant and post ethmoidal branches

27
Q

From which artery does the ophthalmic artery branch?

A

Internal carotid

28
Q

Arteries and veins of the eye

A

Slide 27 and 28

29
Q

Innervation of lacrimal apparatus?

A

Secretomotor from CNVII (carried in CNV1)

Anatomy (49 decks)

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