which are Communication between neurons is mediated by rapid changes in propagated along the length of axonal membranes. These rapid changes are referred to as action potentials; membrane potentials stimuli; action potentials energy; RMPs membrane potential; action potentials
which are Communication between neurons is mediated by rapid changes in propagated along the length of axonal membranes. These rapid changes are referred to as action potentials; membrane potentials stimuli; action potentials energy; RMPs membrane potential; action potentials
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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Transcribed Image Text:**Question:**
Communication between neurons is mediated by rapid changes in _________ which are propagated along the length of axonal membranes. These rapid changes are referred to as __________.
**Options:**
- ⦿ action potentials; membrane potentials
- stimuli; action potentials
- energy; RMPs
- membrane potential; action potentials
**Selected Option:**
- ⦿ action potentials; membrane potentials
![**Educational Content: Understanding Action Potentials**
**Graph Explanation:**
The plot displayed above illustrates the phases of an action potential, with voltage on the y-axis and time on the x-axis:
- **A**: Represents the resting state around -70mV.
- **B**: Shows depolarization, where the membrane potential rapidly rises to above +50mV.
- **C**: Indicates repolarization, where the potential falls back towards resting levels.
- **D**: Displays hyperpolarization slightly below resting potential.
- **E**: Marks the threshold potential that must be exceeded for an action potential to occur, shown around -50mV.
**Diagrams:**
Images **K, L,** and **M** depict different configurations of ion channels and the Na+/K+ ATPase pump:
- **Image K**: Shows the configuration during resting state, with the Na+/K+ pump actively exchanging Na+ out for K+ into the cell, maintaining the negative resting potential.
- **Image L**: Depicts open voltage-gated Na+ channels, representing depolarization, as Na+ ions flood into the cell.
- **Image M**: Illustrates open voltage-gated K+ channels, indicating repolarization and hyperpolarization as K+ ions exit the cell, restoring negative charge.
**Matching Phases:**
Match each action potential phase (A, B, C) to the correct image (K, L, M):
- **A** [Choose]
- **B** [Choose]
- **C** [Choose]
This exercise enhances understanding of the physiological processes underpinning neuronal action potentials.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F450044ef-db4b-4b73-a24e-98f3627ca204%2F7fbc41f1-4c8f-4af0-8b1b-4df410db7a8d%2Fsc9f6zn_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Educational Content: Understanding Action Potentials**
**Graph Explanation:**
The plot displayed above illustrates the phases of an action potential, with voltage on the y-axis and time on the x-axis:
- **A**: Represents the resting state around -70mV.
- **B**: Shows depolarization, where the membrane potential rapidly rises to above +50mV.
- **C**: Indicates repolarization, where the potential falls back towards resting levels.
- **D**: Displays hyperpolarization slightly below resting potential.
- **E**: Marks the threshold potential that must be exceeded for an action potential to occur, shown around -50mV.
**Diagrams:**
Images **K, L,** and **M** depict different configurations of ion channels and the Na+/K+ ATPase pump:
- **Image K**: Shows the configuration during resting state, with the Na+/K+ pump actively exchanging Na+ out for K+ into the cell, maintaining the negative resting potential.
- **Image L**: Depicts open voltage-gated Na+ channels, representing depolarization, as Na+ ions flood into the cell.
- **Image M**: Illustrates open voltage-gated K+ channels, indicating repolarization and hyperpolarization as K+ ions exit the cell, restoring negative charge.
**Matching Phases:**
Match each action potential phase (A, B, C) to the correct image (K, L, M):
- **A** [Choose]
- **B** [Choose]
- **C** [Choose]
This exercise enhances understanding of the physiological processes underpinning neuronal action potentials.
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