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 substances are transported by hemoglobin in erythrocytes?

Glucose

Cholesterol

Amino acids

Oxygen

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Verified step by step guidance

Understand the role of hemoglobin: Hemoglobin is a protein found in erythrocytes (red blood cells) that primarily functions to transport oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs.

Identify the substances hemoglobin can transport: Hemoglobin is specifically designed to bind and transport gases like oxygen (O₂) and carbon dioxide (CO₂) due to its structure and affinity for these molecules.

Evaluate the options given: Glucose, cholesterol, and amino acids are not transported by hemoglobin. These substances are typically transported in the blood plasma or through other mechanisms such as lipoproteins for cholesterol.

Focus on oxygen transport: Hemoglobin binds oxygen in the lungs where the oxygen concentration is high, forming oxyhemoglobin. It then releases oxygen in the tissues where the concentration is lower, facilitating cellular respiration.

Conclude with the correct answer: Based on the function of hemoglobin, the correct answer is oxygen, as it is the primary substance transported by hemoglobin in erythrocytes.