Anatomy & Physiology
5th Edition
ISBN: 9780321861580
Author: Marieb, Elaine N.
Publisher: Pearson College Div
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Chapter 11, Problem 17CYU
Which ions flow through chemically gated channels to produce IPSPs? EPSPs?
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What is the role of ions, the phospholipid bilayer, and plasma membrane channels in neurons relative to the concepts of current, voltage, and resistance?
Contrast chemically gated and voltage gated channels. How do their functions differ? In which segments of a neuron are found?
How do leak channels contribute to resting membrane potential?
Chapter 11 Solutions
Anatomy & Physiology
Ch. 11 - What is meant by integration, and does it...Ch. 11 - Which subdivision of the PNS is involved in (a)...Ch. 11 - Which type of neuroglia controls the extracellular...Ch. 11 - Which two types of neuroglia form insulating...Ch. 11 - MAKING CONNECTIONS Which part of the neuron is its...Ch. 11 - How does a nucleus within the brain differ from a...Ch. 11 - How is a myelin sheath formed in the CNS, and what...Ch. 11 - Which structural and functional type of neuron is...Ch. 11 - For an open channel, what factors determine in...Ch. 11 - For which cation is there the greatest amount of...
Ch. 11 - Which is bigger, a graded potential or an action...Ch. 11 - An action potential does not get smaller as it...Ch. 11 - Why does a myelinated axon conduct action...Ch. 11 - If an axon receives two stimuli close together in...Ch. 11 - What structure joins two neurons at an electrical...Ch. 11 - Events at a chemical synapse usually involve...Ch. 11 - Which ions flow through chemically gated channels...Ch. 11 - Prob. 18CYUCh. 11 - Prob. 19CYUCh. 11 - Why is cyclic AMP called a second messenger?Ch. 11 - Which types of neural circuits would give a...Ch. 11 - Prob. 22CYUCh. 11 - 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 - Prob. 3RQCh. 11 - Assume that an EPSP is being generated on the...Ch. 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. 8RQCh. 11 - Inhibition of acetylcholinesterase by poisoning...Ch. 11 - Prob. 10RQCh. 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. 19RQCh. 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. 23RQCh. 11 - Prob. 24RQCh. 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 will happen when ligand gated sodium channels open on a neuron? What will enter/exit the cell? Will it help the cell to depolarize or hyperpolarize? Will it lead to EPSP or IPSP?arrow_forwardWhen a neuron opens voltage-gated Na+ channels, what happens to the membrane potential?arrow_forwardWhat might prevent an EPSP from stimulating action potentials?arrow_forward
- What is the typical resting membrane potential of a neuron?arrow_forwardWhat properties of ion channels allow them to generate the large, rapid changes in membrane potential?arrow_forwardWhat kinds of changes in ion conductance may be expected in an action potential? And how do ion channels permit these changes?arrow_forward
- How do depolarize, repolarize, and hyperpolarize describe the direction of changes in the membrane potential relative to the resting potential in an excitable cell?arrow_forwardWhat causes depolarization of a neuron membrane potential?arrow_forwardWhat effect would decreasing the concentration of extracellular potassium ions have on the membrane potential of a neuron?arrow_forward
- The primary difference between an EPSP and an IPSP is the a) overall speed b) degree of effect c) direction of membrane polarization d) ease of elicitationarrow_forwardWhich functional segment of a neuron contains chemically gated channels? Which functional segments contain voltage-gated channels?arrow_forwardWhat's the phases of action potential?arrow_forward
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