Brainscape's Knowledge GenomeTM

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


See full index

Microanatomy Exam 4 > Eye > Flashcards

Eye Flashcards

1
Q

Corneal epithelium

A

Stratified squamous non-keratinized (5-6 layers thick)

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

Turnover time of corneal epithelium

A

7 days

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

Germinal cells of corneal epithelium are located where?

A

Basal layer at limbus-cornea junction

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

What is Bowmna’s membrane?

A

Basal lamina that support epithelium

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

Thickest layer of cornea

A

Substantia propria (stroma)

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

Tissue of corneal stroma

A

Dense regular CT → highly ordered collagen fibers

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

Fibroblasts of substantia propria may be called?

A

Keratocytes

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

Function of corneal endothelium

A

Keep stroma dehydrated

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

Anterior surface of iris

A

Covered by fibroblasts and collagen fibers → no epithelium

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

Posterior surface of irus

A

Pigmented myoepithelial cell lining

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

Stromal layer of iris

A
  1. Areolar CT
  2. Melanin-containing cells
  3. Blood vessels
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Anterior uvea

A

Ciliary body and iris

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

2 types of mm. in iris

A
  1. Pupillary sphincter m. (parasympathetic)

2. Pupillary dilator m. (sympathetic)

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

Ciliary m. innervated by?

A

Parasympathetic

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

What are corpora nigra?

A

Iris granules → those neat little pyramids in horse and ruminants!

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

Flow of aqueous humor

A
  1. Produced by ciliary processes
  2. Posterior chamber
  3. Pupil
  4. Anterior chamber
  5. Drained at filtration angle
  6. Canal of Schlemm
  7. Continuous with scleral vv.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Ora serrata

A

Transition from optic to blind part of retina

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

Functions of RPE

A
  1. Phagocytic ability
  2. Dehydrate retina
  3. Create immune privilege space
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Rods contain a pigment called?

A

Rhodopsin

20
Q

Cones contain a pigment called?

A

Iodopsin

21
Q

Rhodopsin and iodopsin are?

A

Photoreceptor proteins

22
Q

What is Muller cell?

A

Neuron support cell in the retina

23
Q

Scotopic vision

A

Night vision → rods

24
Q

Photopic vision

A

Daylight → cones

25
Q

Rods or cones are more sensitive to intensity?

A

Rods > cones

26
Q

Rods or cones are more responsible for color?

A

Cones

27
Q

3 neuron system of the retina

A
  1. Nuclei of rods and cones
  2. Inner nuclear layer
  3. Layer of ganglion cells
28
Q

Inner nuclear layer includes?

A
  1. Bipolar cells
  2. Horizontal cells
  3. Amacrine cells
29
Q

What is the optic n. fiber layer?

A

Non-myelinated axons of ganglion cells

30
Q

Plexiform layers

A

Areas of synapse between neuronal cells (between nuclear layers)

31
Q

Fovea

A

Conical depression in retina where visual axis of cornea and lens meets retina → has least refractory distortion

32
Q

Macula lutea

A

Ovoid yellow area surrounding fovea

33
Q

What is at the retina?

A
  1. Flattened inner layers
  2. No blood vessels
  3. Mainly cones
34
Q

Afferent fibers of optic n. are or are not myelinated

A

Not myelinated → does not obstruct light

35
Q

When does optic n. first have myelination?

A

Optic disc

36
Q

Dura matter is continuous with?

A

Sclera

37
Q

Pia-arachnoid is continuous with?

A

Uveal tract

38
Q

Main blood supply of retina

A

Central a. of retina (branch of ophthalmic a.)

39
Q

Lens epithelium is cuboidal and only present on what aspect of the lens?

A

Anterior

40
Q

Where does zonule attach?

A

Suture (where ends of lens fibers come together)

41
Q

Palpebral conjunctiva

A

Stratified columnar with goblet cells

42
Q

Tarsal gland

A

Large sebaceous glands → oily film covers tears

43
Q

Skeletal m. in the eyelids

A

Orbiularis oculi m.

44
Q

Lacrimal glands produce?

A

Tears (similar to plasma, contain lysozyme)

45
Q

What is cherry eye?

A

Prolapse of superficial gland of 3rd eyelid

Microanatomy Exam 4 (14 decks)

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