| 1.1 | 
			 The Human Nervous System | 
		
	
 
	
		
			| Definition | 
		
		
			| 
			 The human nervous system is the control system in the human body 
			 | 
		
	
The nervous system is divided into:
The structure of the human nervous system:


 
The pathway of the human nervous system:
 
	- 
	
Stimuli
	 
	- 
	
Sensory 
	 
	- 
	
Organs/receptors
	 
	- 
	
Nerve impulses
	 
	- 
	
The brain
	 
	- 
	
Nerve impulses
	 
	- 
	
Effector
	 
	- 
	
Respond
	 
Type of response:
	- 
	
Controlled action
	 
	- 
	
Out-of-control actions
	 
	
		
			| Definition | 
		
		
			| Controlled action | 
			Out-of-control actions | 
		
		
			| 
			 Actions that can be controlled by one’s will 
			 | 
			
			 Actions that occur automatically, that is are unnoticed and cannot be controlled according to one’s will 
			 | 
		
		
			| Example | 
		
		
			| 
			 - Communication 
			- Thinking 
			- Eating 
			 | 
			
			 - Breathing 
			- Digestion 
			- Eye reflex 
			 |