Structure & Function (AQA GCSE Biology): Flashcards
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Practise the cards
15 cards from this deck
Role of nervous system
Role of nervous system
React to surroundings & coordinate actions
What receptor cells convert stimulus into
What receptor cells convert stimulus into
Electrical impulse
Type of neuron that carries impulses to CNS
Type of neuron that carries impulses to CNS
Sensory neurons
What CNS stands for
What CNS stands for
Central Nervous System
Type of neuron that carries impulses to effectors
Type of neuron that carries impulses to effectors
Motor neurons
Two types of effector responses
Two types of effector responses
Muscles contracting or glands secreting hormones
Definition of reflexes
Definition of reflexes
Automatic responses before you have time to think
Why reflexes are important
Why reflexes are important
Prevent the individual from getting hurt
Pathway for reflex responses
Pathway for reflex responses
Reflex arc
Where reflex impulse does NOT pass through
Where reflex impulse does NOT pass through
Conscious areas of brain
Type of neuron in CNS during reflex arc
Type of neuron in CNS during reflex arc
Relay neuron
Definition of synapse
Definition of synapse
Gap between two neurons
What diffuses across the synapse
What diffuses across the synapse
Chemical
What chemical does at second neuron
What chemical does at second neuron
Triggers impulse to begin again
Definition of reaction time
Definition of reaction time
How long it takes to respond to a stimulus