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

22. The Respiratory System

Lung Volumes and Capacities

Anatomy & Physiology

22. The Respiratory System

Lung Volumes and Capacities

Previous problemNext problem

Problem 10a

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The functional residual capacity is the volume of air normally left in the lungs after a tidal expiration.

Verified step by step guidance

Step 1: Understand the term 'functional residual capacity' (FRC). FRC refers to the volume of air remaining in the lungs after a normal tidal expiration. It is the sum of the expiratory reserve volume (ERV) and the residual volume (RV).

Step 2: Analyze the statement provided. The statement claims that the functional residual capacity is the volume of air normally left in the lungs after a tidal expiration. Compare this definition with the correct definition of FRC.

Step 3: Determine if the statement is true or false. Based on the definition of FRC, the statement is true because it accurately describes the volume of air left in the lungs after a tidal expiration.

Step 4: If the statement were false, you would need to correct it. For example, if the statement incorrectly defined FRC as the total lung capacity or another lung volume, you would rewrite it to reflect the correct definition.

Step 5: Conclude that the statement is true and does not require correction, as it aligns with the proper definition of functional residual capacity.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Functional Residual Capacity (FRC)

Functional Residual Capacity (FRC) is the volume of air remaining in the lungs after a normal tidal expiration. It is a crucial measure in respiratory physiology, reflecting the balance between the forces that expand the lungs and those that compress them. FRC is important for understanding lung mechanics and gas exchange efficiency.

Tidal Volume (TV)

Tidal Volume (TV) is the amount of air inhaled or exhaled during a normal breath. It is a key component in calculating lung volumes and capacities, including FRC. Understanding TV helps in assessing respiratory function and can indicate various pulmonary conditions when measured alongside other lung volumes.

Lung Volumes and Capacities

Lung volumes and capacities are measurements that describe the different amounts of air the lungs can hold during various phases of the respiratory cycle. These include tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume. Knowledge of these concepts is essential for interpreting pulmonary function tests and diagnosing respiratory disorders.