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

What does hemoglobin pick up once it has given up all its oxygen molecules?

Nitrogen

Glucose

Calcium ions

Carbon dioxide

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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 that is 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 through the body, hemoglobin releases oxygen to the tissues.

Identify what happens after oxygen release: Once hemoglobin has released its oxygen molecules, it is able to bind to carbon dioxide, which is a waste product of cellular metabolism.

Consider the transport of carbon dioxide: Hemoglobin carries carbon dioxide back to the lungs, where it is expelled from the body during exhalation.

Conclude the process: The primary function of hemoglobin after releasing oxygen is to pick up carbon dioxide, not nitrogen, glucose, or calcium ions.