Neurons and Synaptic Transmission
- Created by: Shambhavy
- Created on: 16-06-21 10:22
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- Neurons and Synaptic Transmission
- 3 Types of Neurons
- Sensory neurons: found in receptor cells and carry nerve impulses to the spinal cord and brain.
- Relay neurons: found in between sensory input and motor output. +found in brain and spinal cord and allows sensory and motor neurons to communicate
- Motor neurons: found in the CNS and controls muscle movement. +when its stimulated it releases neurotransmitters that bind to receptors on muscles which triggers response
- Synaptic Transmission
- 1.When the electrical impulse reaches the presynaptic terminal it triggers the release of neurotransmitters from synaptic vesicles.
- 2. Neurotransmitters cross the synapses from vesicles. Then binds to receptors on the post synaptic membrane
- 3. Neurotransmitters have an excitatory or inhibitory effect on other neurons.
- Info is passed down the axon of the neuron as an electrical impulse known as action potential.
- After action potential reaches end of axon it needs to be transferred to another neuron or tissue by crossing the synaptic gap
- At end of neuron are the synaptic vesicles which contain neurotransmitters.
- Neurotransmitters then carry signals across the synaptic gap. They bind on receptor sites on post synaptic cell, then activated
- After activated, they either produce inhibitory or excitatory effects on post-synaptic cell
- Excitatory neurotransmitters make the post synaptic cell more likely to fire.
- Inhibitory neurotransmitters make them less likely to fire.
- After activated, they either produce inhibitory or excitatory effects on post-synaptic cell
- Neurotransmitters then carry signals across the synaptic gap. They bind on receptor sites on post synaptic cell, then activated
- At end of neuron are the synaptic vesicles which contain neurotransmitters.
- After action potential reaches end of axon it needs to be transferred to another neuron or tissue by crossing the synaptic gap
- 3 Types of Neurons
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