Which structure in the respiratory system is responsible for gas exchange?

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Question: Which structure in the respiratory system is responsible for gas exchange?

Options:

Correct Answer: Alveoli

Solution:

The alveoli are tiny air sacs in the lungs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.

Which structure in the respiratory system is responsible for gas exchange?

Which structure in the respiratory system is responsible for gas exchange?

Step 1: Understand that the respiratory system is responsible for breathing and gas exchange.
Step 2: Identify the main parts of the respiratory system, including the lungs, trachea, and bronchi.
Step 3: Learn that the lungs contain tiny structures called alveoli.
Step 4: Recognize that alveoli are small air sacs where oxygen and carbon dioxide are exchanged.
Step 5: Conclude that the alveoli are the specific structures responsible for gas exchange in the respiratory system.

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