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

Introduction to Lung Physiology

Anatomy & Physiology

22. The Respiratory System

Introduction to Lung Physiology

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which structures help move air from the trachea into the lungs?

Bronchi

Pleura

Alveoli

Diaphragm

Previous problemNext problem

Verified step by step guidance

Begin by understanding the anatomy of the respiratory system. The trachea, also known as the windpipe, is a tube that connects the larynx to the bronchi.

Identify the role of the bronchi. The trachea divides into two main bronchi (left and right), which are the primary passageways that direct air into each lung.

Consider the function of the pleura. The pleura are membranes that envelop the lungs and line the chest cavity, providing lubrication and facilitating lung movement during breathing, but they do not directly move air.

Examine the role of alveoli. Alveoli are tiny air sacs at the end of the bronchioles where gas exchange occurs, but they do not transport air from the trachea.

Understand the function of the diaphragm. The diaphragm is a muscle that plays a crucial role in breathing by contracting and relaxing to change the pressure in the thoracic cavity, aiding in air movement, but it does not directly move air from the trachea to the lungs.