The NS Flashcards
0
Q
What are the different receptors and what do they detect
A
Skin- touch,pressure,pain and temperature Tongue - chemicals in food Nose- chemicals in air Eyes- light Ears- sound and position of the head
1
Q
Receptors are……
A
Specialist cells that detect changes in the environment and turn them into electrical impulses
2
Q
What does the CNS consist off
A
Brain and spinal cord
3
Q
Label a motor neuron
A
Cytoplasm Cell membrane Nucleus Axon Myelin sheets Nerve ending
4
Q
What is the myelin sheeth
A
Allows the impulses to travel faster and protects the neurone
5
Q
3 types of neurons
A
Sensory
Relay
Motor
6
Q
What does the sensory neuron do
A
Carry signals from receptors to the spinal cord and brain
7
Q
What does the relay neuron do
A
Carry messages from one part of the CNS to another
8
Q
What does the motor neuron do
A
Carry signals from the CNS to the effectors
9
Q
Effectors are …..
A
Organ which has an effect when stimulated
