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

Change in Membrane Potential

Anatomy & Physiology

11. Nervous Tissue and Nervous System

Change in Membrane Potential

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Multiple Choice

A positive change in the membrane potential is called:

Hyperpolarization

Depolarization

Resting potential

Repolarization

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Verified step by step guidance

Step 1: Understand the concept of membrane potential. Membrane potential refers to the voltage difference across a cell's membrane, primarily due to the distribution of ions like sodium (Na+), potassium (K+), and chloride (Cl−).

Step 2: Learn about the resting potential. Resting potential is the baseline electrical charge of a cell, typically around -70 mV in neurons, where the inside of the cell is more negative compared to the outside.

Step 3: Define depolarization. Depolarization occurs when the membrane potential becomes less negative (moves closer to zero or becomes positive). This happens when sodium channels open, allowing Na+ ions to flow into the cell.

Step 4: Contrast depolarization with hyperpolarization and repolarization. Hyperpolarization refers to the membrane potential becoming more negative than the resting potential, while repolarization is the process of returning to the resting potential after depolarization.

Step 5: Recognize that a positive change in membrane potential is called depolarization, as it involves the membrane potential moving in a positive direction from its resting state.