Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Histology > Lecture 16: The eye > Flashcards

Lecture 16: The eye Flashcards

1
Q

Contents of fibrous tunic

A

Sclera

Cornea

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

Contents of vascular tunic (uvea)

A

Choroid
Ciliary body
Iris

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

Contents of inner tunic

A

Retina- which has optic disc and fovea centralis

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

Limbus

A

Layer between cornea and sclera

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

Episcleral layer

A

Outer layer
Collagen/elastic fibers
Vascular

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

Sclera proper

A

Collagen

Eye muscles attachment

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

Lamina cribosa

A

Sclera layer

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

Corneal epithelium

A

Stratified, nonkeratinized epithelium

High mitotic activity

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

Bowmans membrane

A

Collagen

Separates epithelium from stroma

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

Corneal stroma

A

Layer of collagen

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

Descemets membrane

A

Collagen

Separates stroma from endothelium

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

Corneal layers anterior to posterior

A 
Corneal epithelium
Bowmans layer
Stroma
Descemets membrane
Corneal epithelium
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Choroid

A

Anterior to ora serrata
Highly vascularized
Forms choriocapillary network-provides nutrients to retina

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

Ciliary body

A

Wedge shaped
Produces aqueous humor
Suspensory ligaments of Zinn anchor lens in place
Have ciliary muscles innervated by parasympathetics that flatten or thicken lense

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

Aqueous humor pathway

A

Posterior chamber –>
Anterior chamber –>
Canal of Schlemm –>
Aqueous veins –>

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

Ciliary muscles _____ for close vision and ____ for long vision

A

Contract for close vision

Relax for long vision

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

Iris

A

Separates anterior/posterior chambers
Surrounds pupil
More melanocytes=darker

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

Ora serrata

A

Divides subdivisions of retina

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

Optic disc

A

Optic nerve exits here
Blind spot-lacks photoreceptors
Lacks bipolar/ganglion cells

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

Fovea centralis

A

Acute vision
Highest density of cone cells
Lacks rods and capillaries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Photosensitive region is ____ to ora serrata

A

Posterior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Anterior champer

A

Posterior to cornea, anterior to iris

23
Q

Posterior chamber

A

Posterior to iris, anterior to lens

24
Q

Vitreal chamber

A

Posterior to lens

Hyaloid canal with fetal artery in it

25
Glaucoma
Increased intraocular pressure due to compromised aqueous humor drainage from anterior chamber
26
Pigmented epithelium
Adjacent to choroid
27
External limiting membrane
Area at junction of inner/outer segments of rods and cones and outer nuclear layer Has adherens junctions b/w rods/cones and mueller cells
28
Outer nuclear layer
Cell bodies of rods/cones
29
Outer plexiform layer
Synapses between rods/cones and bipolar neurons and horizontal cells
30
Inner nuclear layer
Cell bodies of bipolar, horizontal, mueller, amacrine cells
31
Inner plexiform layer
Synapses b/w bipolar cells and ganglion cells
32
Ganglion cell layer
Cell bodies of ganglion cells
33
Optic nerve layer
Axons of ganglion cells
34
Internal limiting membrane
Terminations of mueller cell processes and their basement membrane
35
Pigmented epithelial cells location/function
In retina- Adjacent to choroid Synthesize melanin Connect via tight junction to form BBB Esterify vitamin A
36
Bipolar cells
Conducting neurons that synapse with rods/cones
37
Horizontal cells
Interneurons that connect rods/cones with bipolar cells
38
Amacrine cells
Interneurons connecting ganglion cells and bipolar neurons
39
Muller cells
Neuroglia cells in retina Form external limiting membrane Internal limiting membrane formed by the basement of these cells
40
Ganglion cells
Conducting neurons-axons form optic nerve
41
Macula lutea
Surround fovea | Highest visual acuity
42
Rods characteristics
``` Spherule Use rhodopsin Low light Black/white vision Lamellae NOT continuous with plasmalemma 100 rod cells--1 bipolar cell ```
43
Cones characteristics
``` Pedicle Use 3 kinds of iodopsins High light Visual acuity Lamella continuous w/plasmalemma 1 cone cell- 1 bipolar cell ```
44
Inner segment of photoreceptors
Mitochondria/organelles
45
Cell body photoreceptor
Nucleus and short axon
46
Outer segment photoreceptor
Modified cilium | Stacks of disks containing photoreceptors
47
Disks in rod cells vs cone cells
Disk detach from cell membrane in rod cells, stay attached in cone cells
48
Lens capsule
Insertion for suspensory ligament | Type IV collagen
49
Lens nucleus
Fiberous area, no organelles, no nucleus really
50
Glands of zeiss
Sebaceous glands in eye
51
Glands of moll
Sweat glands
52
Meibomian glands
Secretion keeps normal tear film in eye
53
Palpebral fascia
Fibrous core of eyelid
54
Palpebral conjuctiva
Lines nner surface of eyelid, covers eyeball

Histology (24 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions