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 organ(s) receive blood first after it leaves the heart through the aorta?

The kidneys

The lungs

The coronary arteries supplying the heart itself

The liver

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Verified step by step guidance

Step 1: Understand the flow of blood from the heart. Blood is pumped from the left ventricle into the aorta, the largest artery in the body, which distributes oxygenated blood to various organs.

Step 2: Recognize that the coronary arteries are the first branches off the aorta. These arteries supply oxygenated blood directly to the heart muscle itself to ensure it has the energy and oxygen needed to function effectively.

Step 3: Clarify why other organs, such as the kidneys, lungs, and liver, do not receive blood first. The kidneys receive blood through the renal arteries, which branch off the abdominal aorta. The lungs are supplied by the pulmonary circulation, not the aorta. The liver receives blood primarily through the hepatic artery and the portal vein, which are downstream in the circulatory system.

Step 4: Emphasize the importance of the coronary arteries. Since the heart is responsible for pumping blood to the entire body, it must receive oxygen and nutrients first to maintain its own function.

Step 5: Conclude that the coronary arteries are the first to receive blood after it leaves the heart through the aorta, ensuring the heart muscle is adequately supplied with oxygenated blood.