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 Heart2h 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

Resting Membrane Potential

Anatomy & Physiology

11. Nervous Tissue and Nervous System

Resting Membrane Potential

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Multiple Choice

Which of the following is the MOST important factor in generating resting membrane potential?

Na+ concentration gradient.

K+ concentration gradient.

K+ electrical gradient.

Na+/K+ ATPase.

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Verified step by step guidance

Understand the concept of resting membrane potential: It is the electrical potential difference across the cell membrane when the cell is in a non-excited state.

Identify the role of ion gradients: The resting membrane potential is primarily determined by the concentration gradients of ions across the membrane, particularly potassium (K+) and sodium (Na+).

Focus on the K+ concentration gradient: Potassium ions have a higher concentration inside the cell compared to outside. The movement of K+ out of the cell through leak channels is a major contributor to the resting membrane potential.

Consider the Na+/K+ ATPase pump: This pump helps maintain the concentration gradients of Na+ and K+ by actively transporting Na+ out of the cell and K+ into the cell, but it is not the primary factor in generating the resting membrane potential.

Evaluate the options: While the Na+/K+ ATPase and Na+ concentration gradient are important for maintaining ion gradients, the K+ concentration gradient is the most critical factor in generating the resting membrane potential due to its influence on the membrane's permeability to K+ ions.