Brainscape's Knowledge GenomeTM

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


See full index

Orbit Anatomy > Orbit Anatomy > Flashcards

Orbit Anatomy Flashcards

1
Q

Bones of the Orbit

A

Frontal, Ethmoid, Lacrimal, Maxilla, Palatine, Zygomatic, Sphenoid

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

Base of the orbit

A

Zygomatic

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

Fracture of zygomatic causes

A

eyeball to protrude

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

Most structures enter orbit through

A

Superior orbital fissure

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

Optic nerve enters through

A

Optic forament

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

What passes through the lacrimal fossa?

A

lacrimal duct

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

supraorbital arteries and nerve go through?

A

supraorbital foramen

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

Skeleton of eyelid is?

A

Superior and inferior tarsal plates (CT skeleton)

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

Tarsal glands

A

keep eyelids for sticking to each other-produce oil secretion

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

Sebaceous glands are associated with?

A

eyelashes

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

Palebral part of the orbicularis oculi is within ?

A

the eyelids

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

Upper eyelid muscle only

A

LEvator palpebrae superioris

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

orbicularis oculi has two parts:

A

orbital part and palpebral part

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

orbicularis oculi (palpebral part) fx

A

used for blinking

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

Levator palpebrae superioris fx

A

raise the eyelid

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

orbicularis oculi innervated by cranial nerve?

A

XII

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

levator palpebrae superioris innervated by cranial nerve?

A

III

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

Lacrimal gland is located

A

superficially under skin, lateral superior to the eye

19
Q

Function of lacrimal gland

A

produces tears

20
Q

tears flow?

A

From superior lateral, to inferior medial

21
Q

tears are collected by?

A

lacrimal lake/ lacrimal caruncle, lacrimal papillae, lacrimal canaliculi, lacrimal sac (dilated upper end of nasolacrimal duct), duct takes fluid into the inferior nasal concha

22
Q

What is the conjuctiva?

A

The mucous membrane lining the eyelids and the eyeball (over sclera)

23
Q

Innervation of superior rectus

A

CN III

24
Q

Fx of superior rectus

A

rotate pupils superiorly and medially

25
Q

Innervation of medial rectus

A

CN III

26
Q

Fx of medial rectus

A

roates pupils medially

27
Q

Innervation of lateral rectus

A

CN VI

28
Q

Fx of lateral rectus

A

rotates pupil laterally

29
Q

Innervation of inferior rectus

A

CN III

30
Q

Fx of inferior rectus

A

rotates pupils inferiorly and medially

31
Q

Innervation of superior oblique

A

CN IV

32
Q

Fx of superior oblique

A

rotate pupils laterally and inferiorly

33
Q

Innervation of inferior oblique

A

CN III

34
Q

Fx of inferior oblique

A

rotates pupils laterally and superiorly

35
Q

Innervation of Levator Palpebrae superioris

A

CN III

36
Q

Fx of the levator palpebrae superioris

A

raises the upper eyelid

37
Q

NERVE SUPPLY TO EXTRAOCULAR MUSCLES

A

SO4 LR6 (III)

38
Q

O/I of superior/inferior/medial/lateral rectus muscles

A

O: common tendinous ring/ I: eyeball

39
Q

Which extraocular muscle never attaches to the eyeball but instead to the eyelid

A

levator palpabrae superioris

40
Q

superior oblique muscle is called the salvation army muscle because the action of it is?

A

down and out

41
Q

What supplies the orbit?

A

ophtalmic branch of the internal carotid

42
Q

What are the main branches of the ophthalmic artery?

A

lacrimal, supraoribital, ethmoidal, supratrochlear

43
Q

facial veins make connection with?

A

opthalmic vein (including the cavernous sinus) and pterygoid plexus

44
Q

Facial veins do not have?

A

valves, infection can spread up them

Orbit Anatomy (1 decks)

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