Human Biology Custom Edition
11th Edition
ISBN: 9781337631532
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 13, Problem 2SQ
A neuron responds to adequate stimulation with _______, a type of self-propagating signal.
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A neuron receiving a large enough signal, a resting potential changes and produces electrical impulse called ___________.
In the PNS, neuron cell bodies are located in ______________ and surrounded by neuroglial cells called ______________ cells.
An influx of positive sodium ions causes opening of the activation gates of voltage regulated sodium channels resulting in a further influx of positive sodium ions, and thus the initial stages of an action potential are regulated by ______ feedback.
Chapter 13 Solutions
Human Biology Custom Edition
Ch. 13 - Explain the difference between a sensory neuron,...Ch. 13 - What are the functional zones of a motor neuron?Ch. 13 - Define an action potential.Ch. 13 - What is a synapse? Explain the difference between...Ch. 13 - Explain what happens during synaptic integration.Ch. 13 - Prob. 6RQCh. 13 - Prob. 7RQCh. 13 - The nervous system senses, interprets, and issues...Ch. 13 - A neuron responds to adequate stimulation with...Ch. 13 - When action potentials arrive at a synapse between...
Ch. 13 - In the simplest kind of reflex______, directly...Ch. 13 - The accelerating flow of _______ ions through...Ch. 13 - Prob. 6SQCh. 13 - Prob. 7SQCh. 13 - Cerebrospinal fluid _____. a. fills cavities and...Ch. 13 - Match each region of the central nervous system...Ch. 13 - Prob. 1CTCh. 13 - In newborns and premature babies, the bloodbrain...Ch. 13 - Prob. 3CT
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- When action potentials arrive at a synapse between a neuron and another cell, they stimulate the release of molecules of a ________ that diffuse over to that cell.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_forwardSteps that occur in a neuron Defore, during, and affer action Potentialarrow_forward
- Why the refractory period sets a limit to how frequently a neuron can fire.arrow_forwardAn influx of positive sodium ions eventually causes closing of the inactivation gates of voltage regulated sodium channels, stopping the influx of positive sodium ions, and thus the final stages of an action potential are regulated by _____ feedback.arrow_forwardNeurons receive incoming signals by way of specialized processes called _____.arrow_forward
- In the CNS, myelin is produced by glial cells called ___________ .arrow_forwardTrue or False: All input to a neuron occurs via synapses on the neuron's dendritesarrow_forwardNeuron(key terms:dendrites, axo,electrical signals, communication) One important structure/feature of a neuron isarrow_forward
- “All-or-none” response in impulse conductionmeans thatarrow_forwardThe ____________ is a period of time in which a neuron is producing an action potential and cannot respond to another stimulus of any strength.arrow_forwardA myelinated nerve fiber can produce action potentials only in specialized regions called _____________ .arrow_forward
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