Pump and Channel Location Review 1. Identify the name of each segment and describe its role in the nerve impulse A. В. С. D. 2. On which segment(s) are the following channels or pumps located? Na+ leak channels K+ leak channels Na-K pumps Chemically gated Na+ channels Chemically gated K+ channels Chemically gated Cl- channels Voltage gated Na+ channels Voltage gated K+ channels Voltage gated Ca+ channels Ca+ pumps

Pump and Channel Location Review 1. Identify the name of each segment and describe its role in the nerve impulse A. В. С. D. 2. On which segment(s) are the following channels or pumps located? Na+ leak channels K+ leak channels Na-K pumps Chemically gated Na+ channels Chemically gated K+ channels Chemically gated Cl- channels Voltage gated Na+ channels Voltage gated K+ channels Voltage gated Ca+ channels Ca+ pumps

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Subject: Neurophysiology Estimate the driving force for sodium currents at the peak of an action potential.
Practice 8° 58 Subthreshold potentials can produce action potentials through it can't occur spatial summation temporal summation both temporal summation and spatial summation
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5- The chemical synapse: a. Answer the fill-in-the-blank questions A. Neurons do not touch each other at a level of a chemical synapse; they are separated by a small gap called B. A nerve impulse cannot cross this type of synapse; information is passed from one neuron to the next one using chemical messengers called C. The chemical messenger binds to a molecule located on the plasma membrane of the neuron
Inhibitory post synaptic membrane potential - Data Cl- Cl- Nr of GABA inside Max Postsynaptic Voltage (mV) outside receptors 140 20 hel-89- 00 140 20 - 34.428 140 40 - ףQLL-b Questions 11. What is an IPSP? 12. GABA receptors on the postsynaptic neuron function as ion channels for which ion? 13. Based on the data collected, when is it more possible for an action potential to occur? When the intracellular Cl- concentration in the postsynaptic neuron increases or when the number of GABA receptors on the postsynaptic membrane increases? 14. Explain
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answer for 14, 17
Compare and contrast the selectivity mechanisms of water channels and potassium channels. The use of diagrams is recommended.
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Phactice o° 65 The main ion controlling long term potentiation (LTP) is Chloride Magnesium Potassium Sodium
7. When the absolute threshold is reached, _______________________ allowing a rapid influx of positively charged sodium ions and changing the membrane potential of the neuron from -70mV to +40mV.
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