Neurons & Synaptic Transmission (AQA A-Level Psychology): Flashcards
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Practise the cards
10 cards from this deck
How many neurons in brain?
How many neurons in brain?
Approx. 100 billion
What are the 3 types of neurons?
What are the 3 types of neurons?
Sensory, relay, motor
Sensory neurons function
Sensory neurons function
Detect & transmit info from environment to brain
Relay neurons function
Relay neurons function
Connect CNS regions; link sensory & motor neurons
Motor neurons function
Motor neurons function
Carry signals from CNS to organs, glands & muscles
Myelin sheath function
Myelin sheath function
Insulates axon & increases signal transmission speed
Synaptic transmission
Synaptic transmission
Converts electrical signals to chemical messages & back
Lock-and-key mechanism
Lock-and-key mechanism
Specific neurotransmitters bind only to compatible receptors
Excitation vs inhibition
Excitation vs inhibition
Increases vs decreases likelihood of neuron firing
Speed of neural processing
Speed of neural processing
50-100 milliseconds