Topic 3 Sensory reception

Question 1

sensation occurs when

Answer 1

neural impulses generated by the stimulation of sensory receptors arrive at cerebral cortex

Question 2

Sensory adaptation is

Answer 2

the brain filtering out redundant (not important) sensory info to prevent overstimulation
happens w things that r constantly repeated too

Question 3

sensory receptors

Answer 3

photoreceptors, chemoreceptors, mechanoreceptors and thermoreceptors

Question 4

photoreceptors are stimulated by what w what

Answer 4

stimulated by light by eye receptors

Question 5

chemoreceptors are stimulated by what with what receptors

Answer 5

stimulated by chemicals by nose or tongue receptors

Question 6

Mechanoreceptors are stimulated by what and with what

Answer 6

stimulated by pressure taken in ear receptors

Question 7

Thermoreceptors are stimulated by what n where

Answer 7

stimulated by heat and cold by skin receptors

Question 8

vision is associated w stimulation of ____
where r they n stimulated by what

Answer 8

photoreceptors, at back of the eye by light energy

Question 9

the eye is made of _ layers n they are

Answer 9

3, Sclera, Choroid and Retina

Question 10

The first layer of the eye is the

Answer 10

Sclera, tough outer layer

Question 11

The sclera includes the ___ which is/dose what

Answer 11

Cornea : the front protective transparent layer of the sclera where light is bent (refracted) to fovea centralis

Question 12

Astigmatism is the

Answer 12

unequal curvature of tge cornea

Question 13

the middle layer of the eye is the ____

Answer 13

Choroid

Question 14

the choroid has/is what

Answer 14

has blood vessels to nourish the eye and is dark in colour to absorb the light

the iris: pigmented muscle controlling amnt of light entering
ciliary body: muscle atteched to lens for focusing

Question 15

Ciliary body is

Answer 15

a muscle attached to the lens for focusing

Question 16

iris is a

Answer 16

pigmented muscle controlling the amount of light entering the eye

Question 17

the middle layer of eye is the ___ and made up of

Answer 17

Choroid, has iris and ciliary body

Question 18

the third/inner layer is the

Answer 18

Retina

Question 19

the retina is made up of

Answer 19

ganglion layer, photoreceptor layer, rods and cones located in periphery

Question 20

ganglion layer is

Answer 20

one that forms optic nerve that exits back of eye (blind spot)
located in retina

Question 21

photoreceptor layer is

Answer 21

one w rods and cones

Question 22

the rods are

Answer 22

located on periphery in photoreceptor layer and for night vision

Question 23

the cones are

Answer 23

concentrated near centre of photoreceptor layer have the fovea centralis w most accurate and colour vision

Question 24

Pupil is

Answer 24

opening in front of eye, not structure just a hole

Question 25

Adaptation is

Answer 25

the pupil dilating and constricting

Question 26

The lens is

Answer 26

behind pupil, focusing light on retina

Question 27

accomodation is

Answer 27

lens changing shape based on if objects are near or far to see tgem better

Question 28

aqueous humour is

Answer 28

the liquid clear thing infront of cornea maintaining its shape

Question 29

Vitreous humour is

Answer 29

liquid in eyeball maintaining its shape

Question 30

the blind spot is the

Answer 30

optic disc

Question 31

you want the most light

Answer 31

in the fovea centralis where there are the most cones

Question 32

the optic nerve and optic disc

Answer 32

takes the message to the brain and is the blind spot w no rods or cones

Question 33

vision pathway

Answer 33

cornea>pupil>lens>photoreceptors>retina>occipital lobe via optic nerve

Question 34

Myopia is

Answer 34

nearsightedness, inability to see objects at a distance eyeball is elongated so focused light falls in front of retina

Question 35

Hyperopia is

Answer 35

farsightedness, inability to see close objects eyeball is shortend so focused light falls behind the retina

Question 36

colourblindness is

Answer 36

a generic condition affecting the cones caused by the lack of specific cones or colour receptors

Question 37

Pinna is the

Answer 37

squishy outer ear part that direct sound waves to auditory canal

Question 38

tympanic membrane or tympanum is the

Answer 38

ear drum, where sound waves strike and vibrations are passed on

Question 39

Outer ear includes

Answer 39

the pinna and ear/auditory canal

Question 40

Middle ear includes

Answer 40

ear drum or tympanic membrane and 3 ossicles/bones; stapes incus and malleus

Question 41

the ossicles are

Answer 41

the 3 bones in middle ear

Question 42

the inner ear includes

Answer 42

cochlear, semicircular canals , vestibular nerve, facial nerve, auditory nerve and organ of corti

Question 43

Organ of corti is

Answer 43

organ in inner ear within cochlea where sound is tuned to action potential after hairs inside are stimulated by pressure change in ear

Question 44

cochlear is

Answer 44

the shell looking thing in ear containing organ of cori and hairs generating action potential to be sent to temporal lobe

Question 45

structures of ear not associated w hearing are

Answer 45

semicircular canals and eustachean tube

Question 46

Semicircular canals are

Answer 46

part of brain filled w fluid where pressure change causes waves to maintain balance

Question 47

the eustachean tube is

Answer 47

one connecting eats with throat allowing air pressure to equalize

Question 48

chemoreceptors for taste are

Answer 48

on the tongue and send impulses to parietal lobe

Question 49

chemoreceptors for smell are

Answer 49

in the nasal cavity known as olfactory cells and transmit signals to olfaction bulb in the brain

Question 50

proprioception is

Answer 50

perception of movement and body position in space(muscles)

Question 51

mechanoreceptors are

Answer 51

associated w hearing with fluctuations in air pressure (sound waves) , they convert energy of sound into electrochemical impedance to brain and balance through converting the energy of liquid movement into electrochemical impulses