The Senses Chp34

Question 1

What are the five senses

Answer 1

touch, sight, smell, taste, hear

Question 2

What is the function of the conjunctiva

Answer 2

protects the sclera/eye from infection

Question 3

What is the function of the sclera

Answer 3

white of the eye and holds the eye in shape

Question 4

What is the function of the cornea

Answer 4

lets light into the eye and bends it towards the retina

Question 5

What is the function of the choroid

Answer 5

dark coloured layer that absorbs light in the eye

Question 6

What is the function of the retina

Answer 6

where light receptors are located (cones and rods)

Question 7

What is the function of rods

Answer 7

detect black and white light, work well in dim light

Question 8

What is the function of cones

Answer 8

detect colours, work in bright light

Question 9

What is the function of the fovea

Answer 9

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

Question 10

What is the function of the optic nerve

Answer 10

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

Question 11

What is the function of the lens

Answer 11

changes shape to focus light on the retina

Question 12

What is the function of the ciliary muscle

Answer 12

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

Question 13

What is the function of the iris

Answer 13

controls the amount of light entering the eye

Question 14

What is the function of the pupil

Answer 14

lets the light into the eye

Question 15

What is the function of the aqueous humour

Answer 15

holds the front of the eye in shape

Question 16

What is the function of the vitreous humour

Answer 16

supports the eye by exerting an outward pressure on the eyeball

Question 17

What is the function of the external muscle

Answer 17

moves the eye in all directions with 6 different muscles

Question 18

What are the functions of the eat

Answer 18

hearing and balance

Question 19

Learn the diagram of the ear

Answer 19

Page 392

Question 20

What are the parts of the ear

Answer 20

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

Question 21

What is the function of the pinna

Answer 21

channel vibrations into the auditory canal

Question 22

What is the function of the auditory canal

Answer 22

carries vibrations to the eardrum

Question 23

What is the function of earwax

Answer 23

traps dust particles and protects the ear

Question 24

What is the function of the eardrum

Answer 24

vibrates as a result of the vibrations that reach it

Question 25

What is the function of the ossicles

Answer 25

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

Question 26

What is the function of the eustachian tube

Answer 26

equalises pressure on either side of the eardrum

Question 27

What is the function of the cochlea

Answer 27

converts vibrations from the ossicles to electrical impulses

Question 28

What is the function of the semi-circular canals

Answer 28

balance

Question 29

What sends electrical impulses from the ear to the brain

Answer 29

the cochlear/the auditory nerve

Question 30

What is a named hearing disorder

Answer 30

glue ear

Question 31

What is a correction method for glue ear

Answer 31

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