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NERVOUS SYSTEM - Coggle Diagram
NERVOUS SYSTEM
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Describe the synapse structure, function, and processes that occur at the synapse
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Function
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Neurotransmitters released at the synapse influence the electrical activity of the postsynaptic membrane, either exciting or inhibiting it
Processes
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Voltage-gated Ca²⁺ channels open, allowing calcium ions to enter the terminal.
The influx of Ca²⁺ triggers synaptic vesicles to fuse with the presynaptic membrane and release neurotransmitters into the synaptic cleft by exocytosis.
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This binding opens ion channels, producing a postsynaptic potential (either excitatory or inhibitory).
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Relate the functional and structural differences between gray matter and white matter structures of the nervous system to the structure of neurons
Gray Matter
Function: Serves as the processing and integration center of the nervous system where synapses occur.
Structure: Contains neuron cell bodies, dendrites, unmyelinated axons, axon terminals, and neuroglia.
Relation to Neurons: The presence of cell bodies and dendrites makes gray matter the primary site for information processing, decision-making, and signal initiation.
White Matter
Function: Acts as the communication pathway, transmitting nerve impulses between gray matter regions, the spinal cord, and the brain.
Structure: Composed mainly of myelinated axons that appear white due to the lipid-rich myelin sheath.
Relation to Neurons: The myelinated axons allow rapid electrical conduction of action potentials over long distances, facilitating efficient communication within the nervous system.
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