The Nervous system

Flowchart nodes

• The Nervous System

• The nervous system enables humans to react to their surroundings and coordinate their behaviour.

• Cerebral cortex is concerned with consciousness, intelligence, memory and language.

• The Cerebellum is concerned mainly with the coordination of muscular activity. 

• The medulla is concerned with unconscious activities such as heartbeat and breathing.

• Reflex actions are automatic and rapid. 

• Impulses from a receptor pass along a along a sensory neurone to the nervous system. 

• At a junction (synapse) between a sensory neurone and relay neurone in the central nervous system, a chemical is released that causes an impulse to be sent along a relay neurone. 

• A chemical is then released at the synapse between a relay neurone in the central nervous system, causing impulses to be sent along a motor neurone to the effector.