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

What is the large flat muscle that separates the thoracic cavity from the abdominal cavity?

Rectus abdominis

Pectoralis major

Diaphragm

Latissimus dorsi

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Verified step by step guidance

Begin by identifying the anatomical location of the thoracic and abdominal cavities. The thoracic cavity is located above the diaphragm and contains the heart and lungs, while the abdominal cavity is located below the diaphragm and contains organs such as the stomach, liver, and intestines.

Understand the function of the diaphragm. It is a large, dome-shaped muscle that plays a crucial role in respiration by contracting and relaxing to allow air into the lungs.

Recognize the anatomical position of the diaphragm. It is situated at the base of the thoracic cavity, separating it from the abdominal cavity.

Differentiate the diaphragm from other muscles listed in the options. The rectus abdominis is a muscle of the abdominal wall, the pectoralis major is a chest muscle, and the latissimus dorsi is a back muscle. None of these muscles separate the thoracic cavity from the abdominal cavity.

Conclude that the diaphragm is the correct answer as it is the only muscle that anatomically separates the thoracic cavity from the abdominal cavity.