The Senses (chpt. 34)

Question 1

Name the 5 senses

Answer 1

Touch
Sight
Taste
Smell
Hearing

Question 2

What receptors are found on the skin

Answer 2

Pain touch temperature

Question 3

What is a blind spot

Answer 3

Part of eye with no rods or cones

Question 4

Role of pupil in eye

Answer 4

Lets light in

Question 5

Where in the eye are rods and cones located

Answer 5

The retina

Question 6

Difference between rods and cones

Answer 6

RODS
- black & white
- work in dim light

CONES
- colours
- bright light

Question 7

What is detected by the tongue

Answer 7

Taste

Question 8

Name the four tastes the tongue is sensitive to

Answer 8

Sweet sour salt bitter

Question 9

What in the nose detects smell

Answer 9

Olfactory neurons

Question 10

Name a hearing disorder and corrective measure

Answer 10

Glue ear - grommets

Question 11

Name a vision disorder and a corrective measure

Answer 11

Long / short sighted - laser eye surgery

Question 12

What is the outer ear (pinna) composed of

Answer 12

Cartilage

Question 13

Explain the function of the outer ear (pinna)

Answer 13

Collects and channels vibrations

Question 14

Name one part of the body that protects the ear

Answer 14

Skull

Question 15

How can manual labourers such as construction workers avoid permanent hearing loss when using loud machinery

Answer 15

Use ear protection

Question 16

Why can damage to the optic nerve result in blindness?

Answer 16

No impulses will be sent to the brain

Question 17

How is the eye protected from external damage

Answer 17

Eyelid
Skull

Question 18

Name the part of the eye that contains a large amount of blood vessels

Answer 18

Choroid

Question 19

What is the smallest bone in the body

Answer 19

Stirrup in middle ear

Question 20

Which type of light receptors are responsible for colour vision

Answer 20

Cones

Question 21

Describe the function of the Eustachian tube in the ear

Answer 21

Equalise pressure

Question 22

Describe the function of the semi-circular canals in the ear

Answer 22

Control balance

Question 23

Describe the function of the optic nerve

Answer 23

Send impulses from the eye to the brain

Question 24

Explain why cataracts can lead to blindness

Answer 24

Can prevent light entering the eye (as the lens is no longer transparent)

Question 25

What is a reflex action

Answer 25

Automatic/ involuntary response to a stimulus

Question 26

Which part of the brain co-ordinates messages from the semi-circular canals

Answer 26

Cerebellum

Question 27

Suggest an advantage to humans of having two eyes

Answer 27

Depth perception

Question 28

Name the fluid that fills the rear chamber of the eye and give its function

Answer 28

Vitreous humour
Gives shape

Question 29

Where is the blind spot located

Answer 29

Where the optic nerve enters the eye

Question 30

Name the part of the eye that contains light receptor cells

Answer 30

Retina

Question 31

Name a part of the ear that has a function similar to that of the stirrup

Answer 31

Hammer or anvil

Question 32

What are the ossicles

Answer 32

Three tiny bones in middle ear - hammer, anvil, stirrup

Question 33

Name the structure in the eye that determines the diameter of the pupil

Answer 33

The iris

Question 34

Function of the choroid layer

Answer 34

Prevent reflection of light within the eye

Good blood supply

Question 35

Causes of hearing loss

Answer 35

Prolonged exposure to loud noise / music
Drugs
Infections
Explosions

Question 36

Advantages of having two eyes

Answer 36

• 3D vision
• depth perception
• in case one gets damaged