Brainscape's Knowledge GenomeTM

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


See full index

Bio 30 > ch 3 Special Senses > Flashcards

ch 3 Special Senses Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
0
Q

Stimulus is a form of..

A

Energy, receptors change outside energy into nerve action potentials

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

Sensory neurons convey…..

A

Environment & some internal stimuli to the CNS where it’s assimilated

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

5 senses

A 
Sight
Sound
Touch 
Taste 
Smell
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Sensory receptors are……..Highly modified dendrites

A 
Taste
Smell
Pressure
Proprioceptor
Audio
Photo
Thermo
Pain
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Taste

A

Chemical detection with taste buds

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

Smell

A

Chemical detection by olfactory cells

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

Pressure

A

Movement of skin

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

Proprioceptor

A

Spatial awareness, limbs

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

Audio

A

Detect sound waves

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

Photo

A

Detect wavelengths of light

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

Thermo

A

Detect heat changes

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

Pain

A

Protect us from environment

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

Sensory adaptation

A

Occur when receptors become accustom to the stimulus.

Neuron ceases to fire & receptors become less sensitive

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

Taste & smell

A

Work closely together to create the perception of taste

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

Outer layer (eye)

A

Sclera- supports & protects (internal eye) white part

Cornea- refracts light to pupil (also protective covering)

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

Middle layer

A 
Aqueous humor
Choroid
Iris
Vitreous body
Lens
Pupil
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Aqueous humor

A

A liquid

Supplies the cornea w/ nutrients & refracts light

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

Choroid (layer)

A

Contains pigments that prevent scattering of light in eye

Contains blood vessels that feed the diff structures

18
Q

Iris

A

Regulates the amount of light entering the eye

19
Q

Vitreous body (humor)

A

Keeps shape of eye
Permits light transmission to the retina

Irreplaceable!

20
Q

Lens

A

Focuses the image on the retina

21
Q

Pupil

A

Functions as a hole in the iris….controls the amount of light that enters as well

22
Q

Inner layer

A 
Retina
Rods
Cones
Fovea centralis
Blind spot
23
Q

Retina

A

Contains the photoreceptors…..rods and cones

24
Q

Rods

A

Used for viewing dim (black and white) light there are approx. 125,000,000

25
Q

Cones

A

Identify color … Approx 7 million

26
Q

Fovea centralis

A

Keenest vision.
Most sensitive area of the retina
Only cones

27
Q

Blind spot

A

Where the optic nerve attaches to the retina

No cones or rods

28
Q

Afterimages

A

Pos. (after u look at the sun, close ur eyes and still see bright spots)

Neg. (look at bight colours they reverse in color when u look away)

29
Q

Focusing the image

A

Refraction
Ciliary muscles & suspensory ligaments
Accommodation

30
Q

Ciliary muscles & suspensory ligaments

A

Control the lens and the amount of light that enters

31
Q

Accommodation

A

The adjustment of the lens to objects near and far i

  • see close: muscles contact, lens round
  • see far: muscles relax, lens oval
32
Q

Color vision

A

Three different types of cones are found in the retina, each sensitive to one of blue, red, green.

Color blind when one type is defective
Red-green is most common

33
Q

Vision defects

A 
Glaucoma -build up of aqueous humour
Cataract -lens/cornea becomes cloudy
Astigmatism
Nearsightedness -eyeball is to long
Farsightedness -eyeball is to short
34
Q

The ear has 2 main functions

A

Hearing

Equilibrium

35
Q

External ear

A

Pinna
Auditory canal
Ceruminous gland

36
Q

Pinnacle

A

(Auricle)

Amplifies sound by funnelling from large to narrow canals

37
Q

Auditory canal

A

(External auditory meatus)

Carries sounds waves to the tympanic membrane

38
Q

Ceremonious gland

A

Makes ear wax

-for protection

39
Q

Middle ear

A

Ossicles (m-anvil I-hammer s-stirrup)
Tympanic membrane - ear drum
Oval window - receives sounds waves de ossicles
Eustachian tube- air filled, equalizes air pressure

40
Q

Inner ear

A

Vestibule- semicircular canals (keeps equilibrium)
Semicircular canals- fluid filled info w/ equilibrium
Cochlea- tube that converts sound waves to impulses
Cochlear fluid- bathes the organ of corti
Organ of corti- vibrations to impulses

41
Q

Two main components of balance

A

Static equilibrium

Dynamic equilibrium

42
Q

Static equilibrium

A

Involves movement on one plane

Saccule, utricle, and otholiths help maintain

43
Q

Dynamic equilibrium

A

Provide info during movement
Semicircular canals detect direction of movement body adjusts to keep balance

When fluid in semicircular moves continuous it may cause motion sickness

Bio 30 (8 decks)

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