Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

11. Nervous Tissue and Nervous System

Ions - Sodium and Potassium

Anatomy & Physiology

11. Nervous Tissue and Nervous System

Ions - Sodium and Potassium

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Multiple Choice

Which of the following structures allow the movement of potassium through the neuronal membrane?

Voltage-gated potassium channels

Calcium channels

Ligand-gated sodium channels

Sodium-potassium pump

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Verified step by step guidance

Begin by understanding the function of each type of channel or pump mentioned in the options. Voltage-gated potassium channels are specifically designed to allow potassium ions to move across the neuronal membrane in response to changes in membrane potential.

Consider the role of calcium channels. These channels are primarily involved in the movement of calcium ions, not potassium ions, across the membrane.

Examine ligand-gated sodium channels. These channels open in response to the binding of a specific ligand, allowing sodium ions to pass through, not potassium ions.

Review the function of the sodium-potassium pump. This pump actively transports sodium ions out of the cell and potassium ions into the cell, but it does not allow passive movement of potassium ions through the membrane.

Conclude that the structure specifically allowing the movement of potassium ions through the neuronal membrane in response to voltage changes is the voltage-gated potassium channel.