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

Which of the following organ systems pumps the least amount of blood in the human body?

Muscular system

Cardiovascular system

Respiratory system

Digestive system

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Verified step by step guidance

Step 1: Begin by understanding the primary functions of each organ system listed in the problem. The muscular system is responsible for movement and support, the cardiovascular system pumps blood throughout the body, the respiratory system facilitates gas exchange, and the digestive system processes food and absorbs nutrients.

Step 2: Focus on the cardiovascular system, which is directly responsible for pumping blood. The heart, a key organ in this system, pumps blood to deliver oxygen and nutrients to tissues and remove waste products.

Step 3: Consider the respiratory system. While it plays a vital role in gas exchange (oxygen intake and carbon dioxide removal), it does not pump blood. Instead, it works closely with the cardiovascular system to oxygenate the blood.

Step 4: Examine the muscular system. Although it requires blood flow to function, it does not pump blood itself. Its role is primarily in movement and maintaining posture.

Step 5: Finally, analyze the digestive system. Its primary function is to break down food, absorb nutrients, and eliminate waste. It does not pump blood, making it the correct answer to the question.