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 triggers the release of erythropoietin (EPO), leading to the production of new red blood cells?

Low oxygen levels in the blood

Increased carbon dioxide levels

High blood pressure

High oxygen levels in the blood

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Verified step by step guidance

Understand the role of erythropoietin (EPO): EPO is a hormone produced primarily by the kidneys. It plays a crucial role in the production of red blood cells (erythropoiesis) by stimulating the bone marrow.

Identify the primary trigger for EPO release: The main stimulus for the release of EPO is hypoxia, which is a condition characterized by low oxygen levels in the blood.

Consider the physiological response to low oxygen levels: When oxygen levels in the blood decrease, the kidneys detect this change and respond by increasing the production and release of EPO.

Evaluate the other options: Increased carbon dioxide levels, high blood pressure, and high oxygen levels do not directly stimulate EPO release. In fact, high oxygen levels would likely decrease EPO production.

Conclude the correct trigger: Based on the understanding of EPO's function and the body's response to hypoxia, low oxygen levels in the blood are the correct trigger for the release of erythropoietin.