The Nervous System

Question 1

What is a stimulus

Answer 1

A change in your environment which you may need to react to

Question 2

What are your five different sense organs

Answer 2

Eyes
Nose
Tongue
Ears
Skin

Question 3

What are receptors

Answer 3

Groups of cells which are sensitive to a stimulus. They change the stimulus energy into electrical impulses

Question 4

What are the 2 main effectors

Answer 4

Muscles

Glands

Question 5

What are light receptors

Answer 5

Things sensitive to light

Question 6

What are sound receptors

Answer 6

Things sensitive to sound

Question 7

What are smell receptors

Answer 7

Things sensitive to chemical stimuli

Question 8

What are taste receptors

Answer 8

Things sensitive to different tastes (bitter,sweet, salty etc)

Question 9

What are skin receptors

Answer 9

Things sensitive to touch, pressure, pain and temperature changed etc

Question 10

What are sensory neurons

Answer 10

The nerve cells that carry signals as electrical impulses from the receptors in the sense organs to the CNS

Question 11

What are relay neurons

Answer 11

The nerve cells that carry signals from sensory neurones to motor neurones

Question 12

Motor neurons

Answer 12

The nerve cells that carry signals from the CNS to the effector

Question 13

What does CNS stand for

Answer 13

Central Nervous System

Question 14

What is the CNS

Answer 14

Where all the information from the sense organs is sent and where reflexes are coordinated

Question 15

What does the CNS consist of

Answer 15

Brain

Spinal Cord

Question 16

What do neurons do to the CNS

Answer 16

transmit information to and fro very quickly

Question 17

Where do the instructions from the CNS go

Answer 17

The effectors which respond accordingly