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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Why might a red blood cell 'panic' when carrying carbon dioxide in the body?

Because carbon dioxide is used as an energy source by red blood cells

Because red blood cells store carbon dioxide for long-term use

Because carbon dioxide increases oxygen binding to hemoglobin

Because it needs to quickly transport carbon dioxide to the lungs for exhalation

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Verified step by step guidance

Understand the role of red blood cells in gas transport: Red blood cells are specialized cells that transport oxygen from the lungs to tissues and carry carbon dioxide from tissues back to the lungs for exhalation.

Recognize how carbon dioxide is carried: Carbon dioxide is primarily transported in three ways: dissolved in plasma, chemically bound to hemoglobin as carbaminohemoglobin, or converted to bicarbonate ions via the enzyme carbonic anhydrase.

Explain why carbon dioxide transport is urgent: Carbon dioxide is a waste product of cellular respiration. If it accumulates in the blood, it can lower the pH, leading to acidosis, which is harmful to the body. Therefore, red blood cells must quickly transport it to the lungs for removal.

Clarify why the other options are incorrect: Red blood cells do not use carbon dioxide as an energy source, nor do they store it for long-term use. Additionally, carbon dioxide does not increase oxygen binding to hemoglobin; in fact, it facilitates oxygen release to tissues (Bohr effect).

Conclude with the correct answer: The urgency of transporting carbon dioxide to the lungs for exhalation is why a red blood cell might 'panic' when carrying carbon dioxide.