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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

Introduction To Blood

Anatomy & Physiology

17. The Blood

Introduction To Blood

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Multiple Choice

Which of these structures is part of an animal's circulatory system?

Lungs

Kidneys

Heart

Stomach

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Verified step by step guidance

Begin by understanding the primary function of the circulatory system, which is to transport blood throughout the body, delivering oxygen and nutrients to cells and removing waste products.

Identify the key components of the circulatory system. These include the heart, blood vessels (arteries, veins, and capillaries), and blood.

Consider the role of each structure listed in the problem: lungs, kidneys, heart, and stomach. Determine which of these directly contributes to the movement of blood.

Recognize that the heart is the central organ of the circulatory system, responsible for pumping blood through the network of blood vessels.

Conclude that the heart is the correct answer, as it is integral to the circulatory system's function of circulating blood throughout the body.