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Biology > The Senses Chp34 > Flashcards

The Senses Chp34 Flashcards

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1
Q

What are the five senses

A

touch, sight, smell, taste, hear

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2
Q

What is the function of the conjunctiva

A

protects the sclera/eye from infection

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3
Q

What is the function of the sclera

A

white of the eye and holds the eye in shape

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4
Q

What is the function of the cornea

A

lets light into the eye and bends it towards the retina

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5
Q

What is the function of the choroid

A

dark coloured layer that absorbs light in the eye

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6
Q

What is the function of the retina

A

where light receptors are located (cones and rods)

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7
Q

What is the function of rods

A

detect black and white light, work well in dim light

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8
Q

What is the function of cones

A

detect colours, work in bright light

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9
Q

What is the function of the fovea

A

part of the retina that is the region of our sharpest sight

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10
Q

What is the function of the optic nerve

A

carries impulses from the rods and cones to the back of the brain

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11
Q

What is the function of the lens

A

changes shape to focus light on the retina

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12
Q

What is the function of the ciliary muscle

A

causes the lens to change shape when we look at something near or far away

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13
Q

What is the function of the iris

A

controls the amount of light entering the eye

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14
Q

What is the function of the pupil

A

lets the light into the eye

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15
Q

What is the function of the aqueous humour

A

holds the front of the eye in shape

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16
Q

What is the function of the vitreous humour

A

supports the eye by exerting an outward pressure on the eyeball

17
Q

What is the function of the external muscle

A

moves the eye in all directions with 6 different muscles

18
Q

What are the functions of the eat

A

hearing and balance

19
Q

Learn the diagram of the ear

A

Page 392

20
Q

What are the parts of the ear

A

pinna, auditory canal, eardrum, ossicles, eustachian tube, cochlea

21
Q

What is the function of the pinna

A

channel vibrations into the auditory canal

22
Q

What is the function of the auditory canal

A

carries vibrations to the eardrum

23
Q

What is the function of earwax

A

traps dust particles and protects the ear

24
Q

What is the function of the eardrum

A

vibrates as a result of the vibrations that reach it

25
Q

What is the function of the ossicles

A

3 bones (hammer, anvil, stirrup) amplify the vibrations

26
Q

What is the function of the eustachian tube

A

equalises pressure on either side of the eardrum

27
Q

What is the function of the cochlea

A

converts vibrations from the ossicles to electrical impulses

28
Q

What is the function of the semi-circular canals

A

balance

29
Q

What sends electrical impulses from the ear to the brain

A

the cochlear/the auditory nerve

30
Q

What is a named hearing disorder

A

glue ear

31
Q

What is a correction method for glue ear

A

small grommets that are inserted into the eardrum and allow air into the middle ear forcing fluid down the eustachian tube

Biology (34 decks)

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