EBK HUMAN PHYSIOLOGY
7th Edition
ISBN: 9780133983401
Author: Silverthorn
Publisher: YUZU
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Textbook Question
Chapter 8, Problem 9CC
Would the cell membrane depolarize or hyperpolarize if a small amount of Na+ leaked into the cell?
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Which type of transport is most likely used to export Na+ out of the cell?
For which cation are there the largest number of leakage channels in the plasma membrane?
What happens to the membrane potential inside and outside of the cell when Na+ channels are open?
Chapter 8 Solutions
EBK HUMAN PHYSIOLOGY
Ch. 8 - Organize the following terms describing functional...Ch. 8 - Where do neurohormone-secreting neurons terminate?Ch. 8 - What is the difference between a nerve and a...Ch. 8 - Draw a chain of three neurons that synapse on one...Ch. 8 - What is the primary function of each of the...Ch. 8 - Name the two glial cell types that form myelin....Ch. 8 - Given the values in Table 8.2, use the Nernst...Ch. 8 - Would a cell with a resting membrane potential of...Ch. 8 - Would the cell membrane depolarize or...Ch. 8 - Match each ions movement with the type of graded...
Ch. 8 - Prob. 11CCCh. 8 - What is the difference between conductance and...Ch. 8 - If you put ouabain, an inhibitor of the Na+-K+...Ch. 8 - The pyrethrin insecticides, derived from...Ch. 8 - When Na+ channel gates are resetting, is the...Ch. 8 - A stimulating electrode placed halfway down an...Ch. 8 - Place the following neurons in order of their...Ch. 8 - Prob. 18CCCh. 8 - Prob. 19CCCh. 8 - Prob. 20CCCh. 8 - Prob. 21CCCh. 8 - Prob. 22CCCh. 8 - Classify the H+-neurotransmitter exchange as...Ch. 8 - Prob. 24CCCh. 8 - Prob. 25CCCh. 8 - Is Na+-dependent neurotransmitter reuptake...Ch. 8 - In Figure 8.24e, assume the postsynaptic neuron...Ch. 8 - In the graphs of Figure 8.24a, b, why doesnt the...Ch. 8 - Prob. 29CCCh. 8 - Prob. 30CCCh. 8 - List the three functional classes of neurons, and...Ch. 8 - Somatic motor neurons control __________, and...Ch. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Axonal transport refers to the (a) release of...Ch. 8 - Match the numbers of the appropriate...Ch. 8 - Arrange the following events in the proper...Ch. 8 - List the four major types of ion channels found in...Ch. 8 - Prob. 11RQCh. 8 - An action potential is (circle all correct...Ch. 8 - Choose from the following ions to fill in the...Ch. 8 - What is the myelin sheath?Ch. 8 - List two factors that enhance conduction speed.Ch. 8 - Prob. 16RQCh. 8 - Draw and label a graph of an action potential....Ch. 8 - Prob. 18RQCh. 8 - Prob. 19RQCh. 8 - Create a map showing the organization of the...Ch. 8 - Prob. 21RQCh. 8 - Prob. 22RQCh. 8 - Prob. 23RQCh. 8 - Prob. 24RQCh. 8 - The presence of myelin allows an axon to (choose...Ch. 8 - Define, compare, and contrast the following...Ch. 8 - Prob. 27RQCh. 8 - Prob. 28RQCh. 8 - Prob. 29RQCh. 8 - Prob. 30RQCh. 8 - An unmyelinated axon has a much greater...Ch. 8 - The GHK equation is sometimes abbreviated to...Ch. 8 - In each of the following scenarios, will an action...
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- Describe the mechanism through which a potassium channel can selectively move K* ions across a membrane while preventing the movement of smaller Na* ions.arrow_forwardWhat happens to the membrane potential inside and outside of the cell when Ca+ channels are open?arrow_forwardif an object b has a plasma sodium concentration of 135mOsm/L and an intracellular concentration of 4mOsm/L. It also has a plasma concentration of potassium of 20mOsm/L and an intracellular concentration of 200mOsm/L. studies identify that the cells have a permeability to potassium that is 10 times greater than sodium. What is the resting membrane potentialarrow_forward
- What type of transport mechanism is demonstrated by Na+ movement through the open voltage-gated Na+ channels?arrow_forwardThere are differences in Na+, K+, and Cl- ion concentrations across the membrane. Knowing that ions like to flow down their respective concentration gradients explain how the movement of Cl- and K+ ions can result in membrane hyperpolarization.arrow_forwardfind the cause that, if the plasma membrane of a cell were freely permeable to the sodium ions, will have an impact on the membrane potential.arrow_forward
- Describe the mechanisms by which, Na+, K+, and Ca2+ are regulated in the extracellular fluidarrow_forwardDescribe the contribution of each of the following to establishing and maintaining membrane potential: (a) the Na+K+ pump, (b) passive movement of K+ across the membrane, (c) passive movement of Na+ across the membrane, and (d) the large intracellular anions.arrow_forwardDoes the Solute inside or outside the cell?arrow_forward
- What two mechanisms are triggered by an increase in theosmolality of the extracellular fluid?arrow_forwardPlease answer both questions: 1) The sodium-potassium pump: a) equalizes the charge distribution across the cell membrane. b) transports K+ into the cell where it is in high concentration. c) requires very little energy expenditure on the part of nerve cells. d) establishes concentration gradients across the cell membrane. 2) Membrane potentials are always expressed comparing the inside of the cell relative to the outside of the cell. The resting membrane potential is -70 mV because the inside of the cell accumulates ions with negative charges. a) True b) Falsearrow_forwardWhat effect does an increase or a decrease in extracellularK+ concentration have on resting membrane potential?arrow_forward
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