Brainscape's Knowledge GenomeTM

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


See full index

Biology > ch10 homeostasis - eye > Flashcards

ch10 homeostasis - eye Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

where in eye does conjunctiva encompass

A

1 layer, covering whole white color part, eye

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

optic nerve has sensory or motor neurone?

A

both

i.e.
sensory neurone in the optic nerve

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

label all parts of front view (eye)

https://docs.google.com/document/d/1LQacTU0A416kWYxp3Du0-mVf9HBosNswJ_jQ2zTk5X0/edit?tab=t.0
page 27

A

https://docs.google.com/document/d/1LQacTU0A416kWYxp3Du0-mVf9HBosNswJ_jQ2zTk5X0/edit?tab=t.0 page 28

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

label all parts of horizontal longitudal section (eye)
https://docs.google.com/document/d/1LQacTU0A416kWYxp3Du0-mVf9HBosNswJ_jQ2zTk5X0/edit?tab=t.0 Page 29

A

https://docs.google.com/document/d/1LQacTU0A416kWYxp3Du0-mVf9HBosNswJ_jQ2zTk5X0/edit?tab=t.0
page 30

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

eyelid struct

A
  • folds, skin
  • covers eye
  • when closed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

eyelashes struct

A

row
hair lining eyelid

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

tear gland struct

A

glandular cells located
upper corner
eye ball

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

conjuctiva struct

A
  • thin, transparent mucous membrane
  • covering sclera in
  • exposed front, eyeball
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

sclera struct

A

white, opaque, fibrous
eyeball outer layer
continuous with
cornea

sclera
fiborous -> all tough stuff are

opaque -> thats why those that are blind, eye is all white. Only black part can see, coz white part is opaque.

Cornea covers + continuous w/ eyeball
Conjunctiva covers only sclera

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

cornea struct

A

transparent outer layer of eyeball
- continuous w/ sclera
- cornea covers iris, pupil, aqueous chamber

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

iris struct

A

muscular structure, contains:
2 sets antagonistic muscles
- circular, radial muscles

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

aqueous chamber struct

A

space between cornea,
lens
- filled w/ aqueous humor

aqueous haha

what a design.
hahaha.

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

lens struct

A

BENTO

Biconvex
Elastic
(None)
Transparent
Ovoid

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

suspensory ligament struct

A

fibrous connective tissue

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

cillary body struct

A

contain ciliary muscles

cillary body is not cillary muscles.
it CONTAINS

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

retina struct

A

innermost layer eyeball
contains photoreceptors

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

fovea struct

A

small yellow depression in retina
- greatest conc. cones
- no rods

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

blind spot struct

A

area of retina
- optic nerve leave eye

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

optic nerve struct

A

cranial nerve
- contain neurons

cranial nerve near brain head neck e.g. but for olvls sake, if ask nerve impulse transmission unless special nerves like optic PLS do not write cranial write sensory/motor/relay

optic nerve contain neurons.

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

choroid struct

A

middle layer eyeball
- pigement black high vascularised

Vascularised -> a lot blood vessels

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

vitreous chamber struct

A

space behind lens
surround by retina
filled w/ vitreous humor

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

why does a damn folds of skin covering eye have 3 functions

eyelid funct

A

protect cornea from dmg

prevent excessive light enter eye

blink, spread tears over cornea

23
Q

row hairs lining eyelid

funct

A

shield eye
dust particle

24
Q

tear gland funct

A

secrete tears
wash dust particles
lubricate conjunctiva
reduce friction (eyelid movement)

25
Q

conjunctiva funct

A

secrete mucus
keep exposed front eyeball
moist

26
Q

sclera funct

A

protect eyeball
mechanical dmg

27
Q

cornea funct

A

refracts light into pupil
- accounts for most
- refraction of light in eye

28
Q

iris funct

A

controls amount light entering
eye

29
Q

pupil funct

A

allows light enter eye

30
Q

aqueous chamber funct

A

filled w/

aqueous humor
- transparent, watery fluid
- keep front of eyeball firm
- refract light into pupil

31
Q

lens funct

A

refract light -> retina

32
Q

suspensory ligament funct

A

attaches edge, lens ->
ciliary body

33
Q

cillary body/muscles funct

recap:
cillary body contain cillary muscles

A

control lens’
- thickness
- curvature

allow accomodation

34
Q

retina funct

A

photoreceptors in retina
- detect light
- generate nerve impulses, transmit thru sensory neurons in optic nerve 2 brain

CNS automatically brain, coz its above neck
Optic Nerve is part of Cranial Nerves

35
Q

fovea funct

A

enables detailed
colour vision in bright light

36
Q

cones

A

photoreceptors
enable color vision

37
Q

blind spot funct

A

blind spot dosen’t contain any photoreceptors
therefore insensitive 2 light

38
Q

optic nerve funct

A

sensory neurons in ~
transmit nerve impulse -> brain
when photoreceptor in Retina stimulated

CNS is automatically brain coz its above neck
also part of Cranial Nerves

39
Q

choroid funct

A
  • prevents internal reflection, light
  • contains blood vessels, transport oxygen, nutrients -> eyeball, remove metabolic waste
40
Q

vitreous chamber funct

A

contain
vitreous humor
- transparent, jelly like substance
- keep eyeball firm
- refract light -> retina

cousin of cytoplasm

41
Q

Fill in Blanks (Pupil Reflex)
Photoreceptors in the retina of the eye ___, generate nerve impulses

A

detect
increased/decreased
light intensity

42
Q

Fill in blanks (Pupil Reflex)
Nerve impulses pass across another synapse -> motor neuron (transmits
nerve impulses from brain)…

A

via optic nerve
-> effector muscles in iris

iris circular muscles contract/relax,
radial muscles relax/contract
causes pupil constrict/dilate
decrease/increase amt light entering eye

43
Q

define accomodation

A

adjustment -> curvature of lens
clear images objects
different distances
formed on retina

44
Q

Fill in blanks (Accomodation)
___ photoreceptors in retina, generate nerve impulses

A

blur image stimulates

45
Q

Fill in blanks (Accomodation)
The motor neuron transmits nerve impulses from the brain ___

A

via optic nerve -> effector ciliary muscles in eye

46
Q

Fill in blanks (Accomodation)
C__ M__ (Distant Object)

A

Cillary Muscles
Relaxes

47
Q

Fill in blanks (Accomodation)
C__ M__ (Near Object)

A

Cillary Muscles
Contracts

48
Q

Fill in blanks (Accomodation)
S__ L__ (Distant Object)

A

Suspensory Ligament
Taut

49
Q

Fill in blanks (Accomodation)
S__ L__ (Near Object)

A

Suspensory Ligament
Slackened

50
Q

Thickness, Shape, Focal Length

Fill in blanks (Accomodation)
L___ (Distant Object)

A

Lens
- Thinner
- Less convex
- Increase focal length

51
Q

Fill in blanks (Accomodation)
L___ (Near Object)

A

Lens
- Thicker
- More convex
- Decrease focal length

52
Q

Fill in the blanks (Accomodation)
Light rays (Distant Object)

A

Parellel Light Rays
focused sharply, retina

End goal of light rays = Sharp focus on retina = Clear image

53
Q

Fill in the blanks (Accomodation)
Light rays (Near Object)

A

Diverging Light Rays
focused sharply, retina

End goal of light rays = Sharp focus on retina = Clear image

54
Q
A

Biology (11 decks)

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