L8 Nervous system, snapases, communication between cells

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4 Terms

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Synapse

region where a neuron communicated with another cell

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Electrical synapse

the action potential moves instantaneously from one cell to the other through a protein bridge called gap junction


<p>the action potential moves instantaneously from one cell to the other through a protein bridge called gap junction</p><p></p>
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Chemical synapse

the chemical signals are neurotransmitters released in the synaptic cleft

<p>the chemical signals are neurotransmitters released in the synaptic cleft</p>
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Chemical synapse- structure

  1. AP arrives to the presynaptic terminal

  2. Voltage-gated Ca+2 channels open and Ca2+ enters the cell

  3. Vesicles with neurontransmitters fuse with the membrane

  4. Exocytosis of neurotransmitters onto the synaptic cleft

  5. Neurotransmitter binds to a receptor in the postsynaptic cell


<ol><li><p>AP arrives to the presynaptic terminal </p></li><li><p>Voltage-gated Ca+2 channels open and Ca2+ enters the cell </p></li><li><p>Vesicles with neurontransmitters fuse with the membrane </p></li><li><p>Exocytosis of neurotransmitters onto the synaptic cleft </p></li><li><p>Neurotransmitter binds to a receptor in the postsynaptic cell</p></li></ol><p></p>