(6) senses Flashcards

(60 cards)

1
Q

what are the 5 senses

A
touch
smell (olfaction)
taste (gustation)
vision
hearing (audition)
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2
Q

what are the 4 types of receptors

A

mechanoreceptors
photoreceptors
thermoreceptors
chemoreceptors

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3
Q

mechanoreceptors

A

movement & touch

skin, ears, hollow internal organs

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4
Q

photoreceptors

A

light
retina
rods and cones

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5
Q

thermoreceptors

A

temperature

skin

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6
Q

chemoreceptors

A

chemicals

nose and tongue

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7
Q

touch (what & where)

A

free nerve endings in epidermis pick up heat/cold/pain
special sensory nerves in the dermis & hypodermis pick up pressure and touch
*mechanoreceptors in the skin

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8
Q

touch - functions

A

thermoregulation
homeostasis
protection
sensory reception

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9
Q

touch - processing

A

parietal lobe

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10
Q

smell (what & where)

A

millions of olfactory receptors on the roof of the nasal cavity - each has its own smell to pick up
chemoreceptors in the olfactory bulb (nose)

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11
Q

smell - functions

A

protection

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12
Q

the only way to mess up smell

A

kill the cell

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13
Q

smell - processing

A

temporal lobe

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14
Q

taste (what & where)

A

onion shaped tastebuds on the sides of papillae
in epithelial tissue
chemoreceptors on the tongue

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15
Q

5 tastes

A
sweet
salty
sour
bitter
umami
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16
Q

where are the tastes on the tongue

A

sweet: bottom & middle
salty: tip/bottom & sides
sour: sides
bitter: back
umami: all over

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17
Q

taste - processing

A

parietal lobe

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18
Q

vision - accessory structures (4/5)

A

eyebrow
eyelids
eyelashes
lacrimal apparatus (gland & duct)

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19
Q

eyebrow

A

shade

deflection

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20
Q

eyelids

A

lubrication, move things out of eye, protection from light damage or items

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21
Q

eyelashes

A

trap debris and prevent things from getting in your eye

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22
Q

lacrimal gland

A

produce tears

by upper eyelid & eyebrow

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23
Q

lacrimal duct

A

drain tears

inner corner of eye, opens up to the nasal cavity

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24
Q

binocular vision

A

seeing with 2 eyes in front
predator position
helps approx distance & direction

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25
vision structures (11)
``` conjunctiva (sclera & cornea) pupil iris aqueous humor lens ciliary bodies vitreous humor retina fovea/macula optic disk optic nerve ```
26
retina structures
fovea/macula photoreceptors optic disk optic nerve
27
conjunctiva
loose connective tissue covers the surface of the eye protection
28
sclera
white part
29
cornea
covers the surface of the iris & pupil
30
pupil
black hole | lets in light
31
iris
colored muscle | control the size of the pupil
32
aqueous humor
liquid between cornea & pupil shapes the cornea continuously recycled
33
lens
focuses light waves on the retina by changing shape
34
vitreous humor
liquid in the eye | maintain the eyeball's shape
35
ciliary bodies
fibers around the lens | shape/shift/angle the lens
36
retina
inside back wall of the eye
37
fovea/macula
center of focus
38
optic disk
where the optic nerve meets the eye | blindspot
39
optic nerve
nerve that sends the neural impulses from the eye to the occipital lobe of the brain
40
photoreceptors (2)
rods | cones
41
rodes
see dim light | movement
42
cones
``` see color (red/green/blue) detail ```
43
conditions that affect the eye
``` color blindness nearsighted/farsighted astigmatism glaucoma diabetic retinopathy cataracts strabismus ```
44
hearing - structures (7)
``` pinna auditory canal tympanic membrane malleus/incus/stapes (3 middle bones) oval window cochlea auditory nerve ```
45
hearing - accessory structures
eustachian tube | semicircular canals
46
hearing - processed
temporal lobe
47
sound waves vary in
frequency | amplitude
48
frequency
pitch
49
amplitude
volume
50
hearing conditions
conductive sensorineural mixed central
51
semicircular canal condition
vertigo | motion sickness
52
visual field of view
180º
53
visual processes use how much of the brain
75%
54
we can distinguish how many colors
10 million
55
years it takes to make visual memory
learn how to distinguish and recognize things over the first 6 years of our life
56
what is visual memory
1/2 billion brain cells make up the visual cortex visual memory is made up of light, shadow, shape, color, size, distance, depth, etc. built over the course of our lifespan
57
semicircular canals also have what receptors
mechanoreceptors
58
highest concentration of heat receptors sent here
fingertips & lips
59
semicircular canals transmit
info about head direction and speed
60
what are the 3 smallest bones in the body
malleus - mallet incus - anvil stapes - stirrup