Nervous System And Reflex Arc Flashcards
0
Q
What does the receptor do?
A
Organ which detects the change
1
Q
What is the stimulus?
A
Change in surroundings
2
Q
What role does the effector play?
A
Muscles - contract
3
Q
What is the central nervous system made up of?
A
Brian and spinal chord
4
Q
What are nerve cells called?
A
Neurones
5
Q
What order do impulses go in?
A
Stimulus Receptor Sensory neurone Brain Effectors Motor neurone Relay neurone Response SRSBEMRS
6
Q
What does the long axon allow?
A
Allows an impulse to be carried over a long distance from CNS to muscle
7
Q
What is at the end of the axon?
A
Branches which make contact with muscle fibres
8
Q
What do dendrites do?
A
Allow each neurone to be connected to many other neurones
9
Q
What is a reflex action?
A
Rapid automatic response to a stimulus eg bright light, pupil smaller
