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

Hemoglobin picks up __________ once it has given up all of its oxygen molecules?

nitrogen

carbon dioxide

glucose

hydrogen

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Verified step by step guidance

Understand the role of hemoglobin in the body: Hemoglobin is a protein found in red blood cells responsible for transporting oxygen from the lungs to the tissues and returning carbon dioxide from the tissues back to the lungs.

Recognize the process of gas exchange: In the lungs, hemoglobin binds to oxygen molecules. As blood circulates to tissues, oxygen is released, and carbon dioxide is picked up for transport back to the lungs.

Identify the correct gas exchanged: Once hemoglobin has released its oxygen molecules, it binds to carbon dioxide, which is a waste product of cellular metabolism, to be transported back to the lungs for exhalation.

Consider the options provided: Nitrogen is not typically transported by hemoglobin in the blood. Glucose is a sugar molecule involved in energy production, not gas exchange. Hydrogen is not directly involved in the gas exchange process with hemoglobin.

Conclude with the correct answer: Hemoglobin picks up carbon dioxide after releasing oxygen, as part of the respiratory gas exchange process.