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 is a portal system in the human body?

Coronary circulation

Pulmonary circulation

Hepatic portal system

Systemic circulation

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Verified step by step guidance

Understand the concept of a portal system: A portal system refers to a network of blood vessels that begins and ends in capillaries, allowing blood to pass through two capillary beds before returning to the heart.

Identify the hepatic portal system: This system involves the liver and is unique because it carries blood from the gastrointestinal tract and spleen to the liver. The blood passes through the capillaries of the digestive organs and then through the capillaries of the liver.

Differentiate from other circulatory systems: Coronary circulation supplies blood to the heart muscle, pulmonary circulation involves the lungs, and systemic circulation distributes blood throughout the body. None of these involve a portal system.

Recognize the function of the hepatic portal system: It allows the liver to process nutrients and detoxify substances absorbed from the digestive tract before they enter the systemic circulation.

Conclude why the hepatic portal system is the correct answer: It is the only option listed that fits the definition of a portal system, involving two capillary beds in sequence.