Homework Help is Here – Start Your Trial Now!
Science
Biology
Which treatment would eliminate the early inward current in a squid giant axon? O Applying a calcium channel blocker Removal of external potassium Removal of external sodium O Applying a potassium channel blocker

Which treatment would eliminate the early inward current in a squid giant axon? O Applying a calcium channel blocker Removal of external potassium Removal of external sodium O Applying a potassium channel blocker

Human Anatomy & Physiology (11th Edition)
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,...
See similar textbooks
icon
Related questions
Question
### Understanding Early Inward Current in Squid Giant Axons The squid giant axon is a well-studied model in neuroscience, and understanding the mechanisms involved in generating electrical signals is critical. The early inward current is a vital part of the action potential, primarily carried by sodium ions entering the cell. This educational resource explores the impact of various treatments on this early inward current. #### Quiz Question: **Which treatment would eliminate the early inward current in a squid giant axon?** 1. Applying a calcium channel blocker 2. Removal of external potassium 3. Removal of external sodium 4. Applying a potassium channel blocker ### Explanation of Options: - **Applying a calcium channel blocker:** Calcium channels are less involved in the early phases of the action potential in squid giant axons; hence, blocking these channels would not significantly impact the early inward sodium current. - **Removal of external potassium:** External potassium primarily affects the repolarization phase of the action potential. Its removal would influence the late current and not the early inward sodium current. - **Removal of external sodium:** The early inward current is predominantly carried by sodium ions. Removing external sodium would eliminate this current because there would be no sodium influx to initiate the depolarization phase of the action potential. - **Applying a potassium channel blocker:** Potassium channels contribute to repolarization and the maintenance of resting membrane potential. Blocking these channels would not directly impact the early inward sodium current. ### Correct Answer: **Removal of external sodium** By understanding these treatments, students can appreciate the specific roles of different ions and channels in nerve signal transmission, particularly in the context of the squid giant axon model.
Transcribed Image Text:### Understanding Early Inward Current in Squid Giant Axons The squid giant axon is a well-studied model in neuroscience, and understanding the mechanisms involved in generating electrical signals is critical. The early inward current is a vital part of the action potential, primarily carried by sodium ions entering the cell. This educational resource explores the impact of various treatments on this early inward current. #### Quiz Question: **Which treatment would eliminate the early inward current in a squid giant axon?** 1. Applying a calcium channel blocker 2. Removal of external potassium 3. Removal of external sodium 4. Applying a potassium channel blocker ### Explanation of Options: - **Applying a calcium channel blocker:** Calcium channels are less involved in the early phases of the action potential in squid giant axons; hence, blocking these channels would not significantly impact the early inward sodium current. - **Removal of external potassium:** External potassium primarily affects the repolarization phase of the action potential. Its removal would influence the late current and not the early inward sodium current. - **Removal of external sodium:** The early inward current is predominantly carried by sodium ions. Removing external sodium would eliminate this current because there would be no sodium influx to initiate the depolarization phase of the action potential. - **Applying a potassium channel blocker:** Potassium channels contribute to repolarization and the maintenance of resting membrane potential. Blocking these channels would not directly impact the early inward sodium current. ### Correct Answer: **Removal of external sodium** By understanding these treatments, students can appreciate the specific roles of different ions and channels in nerve signal transmission, particularly in the context of the squid giant axon model.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Membrane chemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education
SEE MORE TEXTBOOKS