Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Chapter 11, Problem 17SAQ
What is the polarized membrane state? How is it maintained? (Note the relative roles of both passive and active mechanisms.)
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What is the polarized membrane state? How is it maintained? (Note the relative roles of both passive and active mechanisms.)
What is the resting membrane potential, and what is responsible for generating it?
what is membrane potential?please briefly define.
Chapter 11 Solutions
Anatomy & Physiology (6th Edition)
Ch. 11.1 - What is meant by integration, and does it...Ch. 11.1 - Which subdivision of the PNS is involved in (a)...Ch. 11.2 - Which type of neuroglia controls the extracellular...Ch. 11.2 - Which two types of neuroglia form insulating...Ch. 11.3 - How does a nucleus within the brain differ from a...Ch. 11.3 - How is a myelin sheath formed in the CNS, and what...Ch. 11.3 - Which structural and functional type of neuron is...Ch. 11.3 - MAKING CONNECTIONS Which part of the neuron is its...Ch. 11.4 - For an open channel, what factors determine in...Ch. 11.4 - Prob. 10CYU
Ch. 11.5 - What determines the size of a graded potential?Ch. 11.6 - Which is bigger, a graded potential or an action...Ch. 11.6 - An action potential does not get smaller as it...Ch. 11.6 - Why does a myelinated axon conduct action...Ch. 11.6 - If an axon receives two stimuli close together in...Ch. 11.7 - Events at a chemical synapse usually involve...Ch. 11.7 - What structure joins two neurons at an electrical...Ch. 11.8 - Which ions flow through chemically gated channels...Ch. 11.8 - Prob. 19CYUCh. 11.9 - Prob. 20CYUCh. 11.9 - Why is cyclic AMP called a second messenger?Ch. 11.10 - Which types of neural circuits would give a...Ch. 11.10 - Prob. 23CYUCh. 11.10 - What pattern of neural processing occurs when we...Ch. 11 - Which of the following structures is not part of...Ch. 11 - Match the names of the supporting cells found in...Ch. 11 - Assume that an EPSP is being generated on the...Ch. 11 - Prob. 3MCCh. 11 - The velocity of nerve impulse conduction is...Ch. 11 - Chemical synapses are characterized by all of the...Ch. 11 - Biogenic amine neurotransmitters include all but...Ch. 11 - Prob. 8MCCh. 11 - Inhibition of acetylcholinesterase by poisoning...Ch. 11 - The anatomical region of a multipolar neuron where...Ch. 11 - An IPSP is inhibitory because (a) it...Ch. 11 - Identify the neuronal circuits described by...Ch. 11 - Explain both the anatomical and functional...Ch. 11 - (a) Describe the composition and function of the...Ch. 11 - (a) What is myelin? (b) How does the myelination...Ch. 11 - (a) Contrast unipolar, bipolar, and multipolar...Ch. 11 - What is the polarized membrane state? How is it...Ch. 11 - Describe the events that must occur to generate an...Ch. 11 - Prob. 19SAQCh. 11 - (a) Explain the difference between an EPSP and an...Ch. 11 - Since at any moment a neuron is likely to have...Ch. 11 - The effects of neurotransmitter binding are very...Ch. 11 - Prob. 23SAQCh. 11 - Prob. 24SAQCh. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...
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- What is the resting membrane potential? What three factors create the resting membrane potential?arrow_forwardAssume that in a neuron, the plasma membrane permeability values for potassium (K+), sodium (Na+), and Cl− are the following: PK = 1, PNa = 12, and PCl = 0.5. Based on physiological concentrations of K+, Na+, and Cl− (refer to the table), determine the membrane potential in this neuron.arrow_forwardDescribe the contribution of each of the following to the establishment and maintenance of membrane potential: Part A Na+K+ Pump Passive movement of K+ across the membrane Passive movement of Na+ across the membranearrow_forward
- What two factors generate the resting membrane potential?arrow_forwardDescribe the contribution of each of the following to the establishment and maintenance of membrane potential: Part A Na+K+ Pump Passive movement of K+ across the membrane Passive movement of Na+ across the membrane Part B Resting membrane potential is approximately -70mV. Explain what resting membrane potential is and what -70mV refers to.arrow_forwardIn somewhat simple terms please explain the differences between electrical signal propagation through gap junctions and synapses. Which types of cells use each respective method, and how do these methods of transport differ?arrow_forward
- What is the equilibrium membrane potential due to Na+Na+ ions if the extracellular concentration of Na+Na+ ions is 138 mM138 mM and the intracellular concentration of Na+Na+ ions is 21 mM21 mM at 20 ∘C20 ∘C ?arrow_forwardWhat is the expected resting membrane potential (in mV) of a neuron that is typical in all ways except for possessing an extracellular potassium concentration of 104.3 mM, an intracellular sodium concentration of 103.6 mM, and 4 times the normal resting permeability to sodium?arrow_forwardBatrachotoxin (BTX) is a steroidal alkaloid from the skin of Phyllobates terribilis , a poisonous Colombian frog (the source of the poison used on blowgun darts). In the presence of BTX, Na+ channels in an excised patch stay persistently open when the membrane is depolarized. They close when the membrane is repolarized . Which transition is blocked by BTX?arrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license