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

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

How does the sodium-potassium pump contribute to making the interior of the cell negatively charged?

By moving more sodium ions into the cell than potassium ions out of the cell.

By moving more potassium ions into the cell than sodium ions out of the cell.

By moving more sodium ions out of the cell than potassium ions into the cell.

By moving equal numbers of sodium and potassium ions across the cell membrane.

Previous problemNext problem

Verified step by step guidance

Understand the function of the sodium-potassium pump: It is a type of active transport mechanism that moves ions across the cell membrane against their concentration gradient using ATP.

Identify the ions involved: The pump moves sodium (Na⁺) ions out of the cell and potassium (K⁺) ions into the cell.

Determine the ratio of ions moved: For every cycle of the pump, 3 sodium ions are transported out of the cell while 2 potassium ions are transported into the cell.

Analyze the charge movement: Since more positive charges (3 Na⁺) are moved out than are brought in (2 K⁺), this results in a net movement of positive charge out of the cell, contributing to a negative charge inside the cell.

Conclude the effect on cell interior: The activity of the sodium-potassium pump helps maintain the electrochemical gradient, making the interior of the cell negatively charged relative to the outside.