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Neurotransmitters and Synapses

Neurotransmitters and Synapses

Author: Barbara Ludins
Description:

This lesson will define neurotransmitter, synapse, and receptor sites and explain their functions in neural impulses and types of neurotransmitters,

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Tutorial
Terms to Know
  • Acetylcholine

    The most common neurotransmitter, which is used in movement in the peripheral nervous system and related to attention and memory in the brain.

  • Action Potential

    The state in which a neuron reaches its Threshold of Excitation and fires, or sends an electrical impulse down the axon.

  • Neuropeptides

    A special class of neurotransmitters that regulate the activity of neurons and systems in the brain.

  • Neurotransmitter

    Chemical messengers that allow neurons to communicate with other neurons across the synapse.

  • Receptor Sites

    Areas on neurons that connect and respond to neurotransmitters.

  • Resting Potential

    The state in which a neuron is not firing or sending a neural impulse and when there is a negative electrical charge inside the neuron.

  • Synapse

    The small space between the axon terminal of one neuron and the dendrites of other neurons.

  • Threshold of Excitation

    The level or point at which a neuron fires, or a neural impulse is triggered.