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

Organization of the Body: Serous Membranes

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Organization of the Body: Serous Membranes

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Multiple Choice

The two layers of the pericardium produce and release serous fluid into the pericardial sac. Which of the following best describes these layers?

Peritoneum

Meninges

Pleura

Pericardium

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Verified step by step guidance

Step 1: Begin by understanding the pericardium's role in the body. The pericardium is a double-layered membrane that surrounds the heart, providing protection and reducing friction during heartbeats.

Step 2: Learn about the two layers of the pericardium: the outer fibrous pericardium and the inner serous pericardium. The serous pericardium itself has two sublayers: the parietal layer (lining the fibrous pericardium) and the visceral layer (adhering directly to the heart).

Step 3: Understand the function of serous fluid. The serous fluid is secreted by the serous pericardium into the pericardial sac, which lies between the parietal and visceral layers. This fluid reduces friction as the heart contracts and relaxes.

Step 4: Compare the pericardium to other membranes mentioned in the options. The peritoneum lines the abdominal cavity, the meninges surround the brain and spinal cord, and the pleura surrounds the lungs. None of these are associated with the heart.

Step 5: Conclude that the correct answer is 'Pericardium,' as it is the membrane responsible for producing and releasing serous fluid into the pericardial sac surrounding the heart.