1. Two short tubes that carry air into the lungs. 2. Clusters of tiny air sacs that allow the exchange of oxygen and carbon dioxide. 3. Muscular structure that helps to expand and... 1. Two short tubes that carry air into the lungs. 2. Clusters of tiny air sacs that allow the exchange of oxygen and carbon dioxide. 3. Muscular structure that helps to expand and contract the lungs, forcing air in and out.
Understand the Problem
The questions from the image are multiple-choice questions related to human anatomy and the respiratory system. They inquire about structures associated with air passage and gas exchange in the lungs.
Answer
7 - Bronchi, 8 - Alveoli, 9 - Diaphragm
The final answer is: 7 - Bronchi, 8 - Alveoli, 9 - Diaphragm
Answer for screen readers
The final answer is: 7 - Bronchi, 8 - Alveoli, 9 - Diaphragm
More Information
The bronchi are the main passageways into the lungs, alveoli facilitate gas exchange, and the diaphragm is the main muscle involved in respiration.
Tips
Commonly, people confuse bronchi with bronchioles, which are smaller branches of the bronchial tubes.
Sources
- How Lungs Work | American Lung Association - lung.org
- Lungs and Respiratory System (for Parents) | Nemours KidsHealth - kidshealth.org
- The Process of Breathing | Anatomy and Physiology II - courses.lumenlearning.com
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