The Nervous System Flashcards
1
Q
Function of receptors?
A
Cells which detect stimuli/change
2
Q
Function of the coordination centre?
A
Areas that receive & process info from receptors
3
Q
Give 2 examples of coordination centres?
A
Brain & spinal cord
4
Q
Function of effectors?
A
Muscle/glands that bring about a response
5
Q
Order of the system? (stimuli…)
A
Stimuli, receptor, sensory neurones, coordination centre, motor neurones, effector, response
6
Q
What is a reflex arc?
A
Unconscious reflex which doesn’t require the brain
7
Q
Order of reflex arc?
A
Receptor, sensory neurone, spinal cord, relay neurone, effector
8
Q
What are synapses?
A
Gaps between nerve cells
9
Q
Describe what happens in the synapses
A
Electrical impulses trigger chemical neurotransmitters to diffuse across synapse to attach to receptors & carry electrical impulse
