Nervous tissue — composition?
Neurons and glial cells.
Neuron — main function?
Transmit electrical and chemical signals.
Dendrites — role?
Receive incoming signals.
Myelin sheath — function?
Insulates axons, speeds signals.
Glial cells — support roles?
Support, insulate, protect neurons.
Chemical synapse — structure?
Presynaptic terminal, cleft, postsynaptic receptors.
Electrical synapse — mechanism?
Ionic flow through gap junctions.
Neurotransmitter release — process?
Exocytosis of vesicles.
Synaptic plasticity — definition?
Strengthening or weakening of synapses.
LTP — effect?
Increases synaptic strength.
LTD — effect?
Decreases synaptic strength.
Neural circuit — example?
Reflex arc.
Reflex arc — function?
Rapid involuntary response.
Neuronal network — purpose?
Complex information processing.
Test your knowledge with 7 questions on Neural Communication and Circuitry.
1. What are the main cellular components that make up nervous tissue?
2. What is the correct chronological order of signal transmission within a neuron?
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