Concept explainers
To discuss:
Neuromodulators, their chemical nature and how they affect synaptic transmission.
Introduction:
At the individual synapse, the neurons sometimes secrete chemical signals with long term effect on the entire neuron group instead of short, quick effects. Some people call these as neuromodulators and some use the term neurotransmitter generally to include these. The neuromodulators modulate or adjust the neuron group activity in a number of ways: presynaptic neuron increasing the neurotransmitter release, reuptake of the rate of neurotransmitter is altered and so forth.
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Chapter 12 Solutions
LSC (CONCORDIA UNIV ST PAUL) BIO 315/316: B&N DPF Connect with APR and Phils Online Access for Anatomy and Physiology: The Unity of Form and Function 180 Day Access ENTRP
- Why the same neurotransmitter can have different effects on different cells.arrow_forwardWhy the production of an EPSP and IPSP depend on both the neurotransmitter released by the presynaptic neuron and the type of receptor on the postsynaptic neuron.arrow_forwardIn the PNS, neuron cell bodies are located in ______________ and surrounded by neuroglial cells called ______________ cells.arrow_forward
- The nervous system, the major anatomical and functional subdivisions. Three functional properties found in all neurons; define the three most basic functional categories of neurons List the six types of cells that aid neuronsarrow_forwardThe particular glial cells that engulf cellular debris and trigger inflammation aremicroglia.Schwann cells.astrocytes.oligodendrocytes.oligodendroglia.arrow_forwardAt __________ synapses, neurotransmitters hyperpolarize the membrane, by making it more permeable to K+ or  moving membrane potential away from threshold (hyperpolarizing), and making generation of an action potential less likely; these are inhibitory postsynaptic potentials (EPSPs).arrow_forward
- Detailed understanding of what the action potential of a neuron. What is the opening and closing of multiple channels required?arrow_forwardA neuron receiving a large enough signal, a resting potential changes and produces electrical impulse called ___________.arrow_forwardRole of neurotransmission.arrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
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