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: Body Cavities

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Organization of the Body: Body Cavities

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Multiple Choice

Which of the following lines the body cavities that are exposed to the external environment?

Synovial membranes

Mucous membranes

Cutaneous membrane

Serous membranes

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Verified step by step guidance

Understand the function of body membranes: Body membranes are layers of tissue that cover or line surfaces, cavities, and organs. They serve various functions, such as protection, secretion, and absorption.

Identify the types of membranes listed: Synovial membranes, mucous membranes, cutaneous membranes, and serous membranes. Each has distinct characteristics and functions.

Clarify the role of mucous membranes: Mucous membranes line cavities that are exposed to the external environment, such as the respiratory, digestive, and urogenital tracts. They secrete mucus to protect and lubricate these surfaces.

Compare mucous membranes to other types: Synovial membranes are found in joint cavities and are not exposed to the external environment. Cutaneous membranes refer to the skin, which is exposed but serves a different function. Serous membranes line internal cavities and are not exposed to the external environment.

Conclude that mucous membranes are the correct answer because they specifically line cavities exposed to the external environment and play a protective role in these areas.