Transmission Of Messages Flashcards
First step of electrical transmission
When a neuron is in a resting rate, the inside of the cell has a negative charge compared to the outside
Electrical transmission 2
When a neuron is activated by the stimulus, the inside of the cell becomes positively charged for a short period of tine
Electrical transmission 3
This causes action potential to occur
Electrical transmission 4
This leads to an electrical impulse that travels down the axon towards the end of the neuron
Def of synaptic transmissiom
How info is communicated between one neuron and another
What is a synapse
The gap which is formed between neurons and impulses are carried across these gaps in order to continue to the destination
How does transmissiom of the impulse occur
Through the release of neurotransmitters into the synapse
What are neurotransmitters
Chemicals which diffuse across the synapses to relay impulses to the next neuron
What happens to the neurotransmitters
They are released from synaptic vesicles into the synapse and absorbed on the other side by post synaptic receptor sites
Why do each neurotransmitters have their own structure
It means they can only fit into specific receptor sites like a lock and key
What happens if a neurotransmitter has an excitatory effect on a neighbouring neuron
It will increase its positive charge and make it more likely to fire
What happens if a neurotransmitter has am inhibitory effect on a neighbouring neuron
It will increase its negative charge and make it less likely to fire
What is summation
A neuron can revive input from both excitatory and inhibitory neurotransmitters at the same time
The likelihood of summation depends on
Depends on the sum of these inputs
