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

What is Anatomy & Physiology?

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

What is Anatomy & Physiology?

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Multiple Choice

Why does the left ventricle have a thicker myocardial wall compared to the right ventricle?

Because it receives oxygenated blood directly from the lungs.

Because it contains more valves than the right ventricle.

Because it must generate higher pressure to pump blood throughout the systemic circulation.

Because it pumps blood only to the lungs, which requires more force.

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Verified step by step guidance

Understand the function of the left ventricle: The left ventricle is responsible for pumping oxygenated blood to the entire body through the systemic circulation, which requires a higher pressure compared to the right ventricle that pumps blood to the lungs (pulmonary circulation).

Compare the pressure requirements: Systemic circulation involves delivering blood to distant tissues and organs, which requires overcoming greater resistance in the blood vessels. Pulmonary circulation, on the other hand, involves a shorter distance and lower resistance.

Relate pressure generation to myocardial thickness: To generate the higher pressure needed for systemic circulation, the left ventricle has a thicker myocardial wall. This increased thickness allows for stronger contractions and greater force generation.

Eliminate incorrect options: The left ventricle does not have more valves than the right ventricle, nor does it receive oxygenated blood directly from the lungs (this is the role of the left atrium). Additionally, pumping blood to the lungs requires less force, not more.

Conclude the reasoning: The correct answer is that the left ventricle has a thicker myocardial wall because it must generate higher pressure to pump blood throughout the systemic circulation.