Central Nervous System Flashcards
1
Q
What is the PNS
A
Peripheral nervous system
Spinal cord, to your arms, hands, legs and feet
2
Q
Overview of a reaction
A
Stimulus - receptor - sensory neurone - co ordination - motor neurone - effector organ - response
3
Q
What is a synapse
A
The gap between neurones
4
Q
How does a chemical transmitter cross a synapse
A
By diffusion
5
Q
Define diffusion
A
The movement of substances from an area of high concentration to an area of low concentration
6
Q
Define homeostasis
A
The method by which the body controls its natural environment