Brainscape's Knowledge GenomeTM

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


See full index

Ocular Anatomy > Lecture 1/11 > Flashcards

Lecture 1/11 Flashcards

1
Q

what side do the nasal retinal fibers go?

A

to the opposite side

cross

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

what side do the temporal retinal fibers go?

A

stay on the same side

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

how many layers are in the LGN?

A

6 layers

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

what does the LGN do?

A

takes information from both eyes, puts it together to have stereoscopic vision

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

what are optic radiations?

A

from LGB to primary visual cortex

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

where is the primary visual cortex located and what Broadman area?

A

in the occipital lobe of the brain

-Broadman’s area 17

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

where are the association areas of the primary visual cortex?

A

Bradman’s areas 18 and 19, surrounding primary area (17)

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

what kind of organization does the primary visual cortex have?

A

retinotopic organization- point by point representation

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

2 main arteries supplying the eye, orbit, and surrounding structures

A
  1. internal carotid artery (ICA)

2. ophthalmic artery

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

what is the origin of the internal carotid artery (ICA)?

A

starts as a bifurcation of the common carotid (at the level of the thyroid)

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

where does the ICA enter the skull?

A

carotid foramen

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

after the ICA enters the skull through the carotid foramen, where does it go?

A

it goes forward and medially through carotid canal and then vertical into the middle cranial fossa

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

does the ICA go through the foramen lacerum?

A

no, it goes OVER the foramen lacerum

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

what are the branches from the ICA?

A
  • ophthalmic to the orbit

- branch to the brain (that splits into 2): anterior cerebral artery and middle cerebral artery

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

what is the origin of the ophthalmic artery?

A

a branch off the ICA (At the level of the anterior clenoid)

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

where does the ophthalmic enter the orbit?

A

through the optic foramen/ optic canal

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

where is the ICA located compared to the optic nerve?

A

lateral and inferior

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

what happens to the ophthalmic nerve as it enters the orbit?

A

it crosses up over the top of the optic nerve and goes to the medial side of the orbit

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

how many branches does the ophthlamic give off and how many are to the orbital vs. ocular?

A

11 main branches
(-8 orbital branches
-3 ocular branches)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

list the 8 orbital branches of the ophthalmic artery:

A
  1. lacrimal
  2. supraorbital
  3. muscular
  4. anterior ethmoidal
  5. posterior ethmoidal
  6. medial palpebral
  7. supratrochlear
  8. dorsal nasal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

list the 3 ocular branches of the ophthalmic artery:

A
  1. central retinal artery (CRA)
  2. short posterior ciliary
  3. long posterior ciliary
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what branch is the lacrimal and on what side is it located?

A

it is the 2nd branch off the ophthalmic and branching on the lateral side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

describe the path of the lacrimal artery

A

arises near optic foramen, passes anteriorly along superior border of LR muscle, then anteriorly to lacrimal gland, then passes through lacrimal gland

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what does the lacrimal artery supply?

A

the eyelids and conjunctiva of the eyelids (on the lateral side)

25
Q

list the branches of the lacrimal artery

A
  • lateral palpebral
  • inferior and superior
  • zygomatics
  • muscular branches
26
Q

the lateral palpebral branch of the lacrimal artery supplies:

A

the upper eyelid and lower eyelid on lateral side

27
Q

the interior and superior branches of the lacrimal are called _____ and supplies the:

A

palpebral arcades

-will supply lateral eyelids

28
Q

what are the two zygomatic branches of the lacrimal artery and what do they supply?

A
  • zygomatico-temporal and zygomatico-facial

- supply side of face

29
Q

muscular branches of the lacrimal artery supply:

A

the lateral rectus

30
Q

where does the supraorbital branch arise?

A

coming off the ophthalmic artery on medial side and crosses over optic nerve

31
Q

path of the supraorbital artery

A

will pass anteriorly along the medial border of SR muscle and levator, leaves the orbit through supraorbital notch to face and forehead

32
Q

what branches off the supraorbital and what does it supply?

A
  • muscular branches: supply SR muscle and levator

- few branches to frontal bone

33
Q

what does the superior muscular artery branch supply?

A
  • superior oblique
  • levator
  • superior rectus
34
Q

what does the inferior muscular artery branch supply?

A
  • inferior rectus
  • inferior oblique
  • medial rectus
35
Q

what are the branches that come off the muscular artery branches of the rectus muscles called?

A

anterior ciliary arteries

36
Q

where does the anterior ethmoidal artery come off of, and where does it go through the skull?

A

comes off the medial side and goes into ethmoid bone via the anterior ethmoidal foramen

37
Q

what does the anterior ethmoidal artery supply?

A

blood to mucosal tissue in the anterior, medial, and frontal sinuses

38
Q

where does the small terminal branch of the anterior ethmoid go?

A

goes through a crack in the bone to the root of the nose to supply skin there

39
Q

which of the two ethmoidal arteries supplies less tissue?

A

posterior ethmoidal does not supply as much tissue

40
Q

what does the posterior ethmoidal artery supply?

A

the mucosa of the posterior ethmoidal sinus

41
Q

what do the 2 branches (upper and lower) of the medial palpebral artery supply?

A

the medial upper and lower eyelid

-they also form palpebral arcades

42
Q

what is the frontal terminal branch of the ophthalmic artery?

A

supratrochlear

43
Q

where does the supratrochlear leave the orbit?

A

above the medial palpebral ligament

44
Q

what does the supratrochlear supply?

A

superficial muscle of the forehead

45
Q

what is the other terminal branch of the ophthalmic?

A

dorsal nasal

46
Q

where does the dorsal nasal branch leave the orbit?

A

above the medial palpebral ligament

47
Q

what does the dorsal nasal branch supply?

A

to the skin at the root of the nose and the lacrimal sac area

48
Q

what artery is the 1st branch from the ophthalmic?

A

central retinal artery (CRA)

49
Q

where does the CRA penetrate?

A

penetrates into the optic nerve behind the globe about 10-15 mm (on the medial side of the optic nerve)

50
Q

where does the CRA come into the eye and what path does it take?

A

comes into posterior segment, to vitreous chamber, and then branches in the nerve fiber layer on the medial side of the optic nerve

51
Q

where does the CRA supply?

A

the inner half of the retina

bifurcates into sup. and inf. and so on

52
Q

how many short posterior ciliary arteries are there?

A

about 6-12

53
Q

what is the arrangement and location of the short posterior ciliary arteries?

A

arranged in a ring around the optic nerve about 3 mm away from the optic nerve

54
Q

path of the short posterior ciliary arteries

A

penetrates sclera, forms circle of zinn, goes into perichoroidal space

55
Q

what does the short posterior ciliary arteries supply?

A

the posterior half of the eye (will not go forward of the equator

56
Q

how many of the long posterior ciliary arteries are there?

A

2

57
Q

what is the arrangement and location of the long posterior ciliary arteries?

A

they pierce the sclera about 4mm away from the optic nerve on either side

58
Q

where does the long posterior ciliary arteries run and supply?

A
  • run in perichoroidal space to the front of the eye

- contribute to major arterial circle of the iris (in ciliary body)

Ocular Anatomy (20 decks)

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