Table of contents

Skip topic navigation

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

3. Energy & Cell Processes

Introduction to Cellular Respiration

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Cellular Respiration

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Why does oxygen debt develop during intense physical activity?

Because the body produces excess oxygen that cannot be utilized.

Because the body stops producing ATP altogether.

Because the body increases its carbon dioxide production beyond normal levels.

Because the body uses more oxygen than it can supply, leading to anaerobic respiration.

Previous problemNext problem

Verified step by step guidance

Understand the concept of oxygen debt: During intense physical activity, the body's demand for oxygen exceeds the supply, leading to a temporary shortage.

Recognize that when oxygen supply is insufficient, the body resorts to anaerobic respiration to produce ATP, which is less efficient and results in the accumulation of lactic acid.

Identify that the accumulation of lactic acid and the need to restore normal oxygen levels post-exercise is what constitutes 'oxygen debt'.

Acknowledge that the body needs to repay this oxygen debt after the activity by consuming more oxygen to metabolize the lactic acid and restore energy reserves.

Conclude that the correct reason for oxygen debt is the body's increased oxygen usage during intense activity, which surpasses the oxygen supply, necessitating anaerobic respiration.