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

17. The Blood

Erythrocytes: Hemoglobin

Anatomy & Physiology

17. The Blood

Erythrocytes: Hemoglobin

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Multiple Choice

Which of the following is true about the amount of oxygen carried by erythrocytes (red blood cells)?

Each hemoglobin molecule can bind up to four oxygen molecules.

Erythrocytes release all their oxygen in the tissues.

The amount of oxygen carried by erythrocytes is independent of hemoglobin concentration.

Erythrocytes can carry oxygen only when they are in the lungs.

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Verified step by step guidance

Understand that erythrocytes, or red blood cells, are responsible for transporting oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs.

Recognize that hemoglobin is a protein found in erythrocytes that plays a crucial role in oxygen transport. Each hemoglobin molecule can bind up to four oxygen molecules, which is essential for efficient oxygen transport.

Consider the statement that erythrocytes release all their oxygen in the tissues. In reality, erythrocytes release oxygen based on the tissue's needs, not all at once, allowing for efficient oxygen delivery.

Evaluate the claim that the amount of oxygen carried by erythrocytes is independent of hemoglobin concentration. In fact, the oxygen-carrying capacity of blood is directly related to the hemoglobin concentration, as hemoglobin is the molecule that binds oxygen.

Analyze the statement that erythrocytes can carry oxygen only when they are in the lungs. Erythrocytes carry oxygen from the lungs to the tissues, so they are capable of carrying oxygen throughout the circulatory system, not just in the lungs.