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Which structure is responsible for the exchange of gases in the lungs?

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Question: Which structure is responsible for the exchange of gases in the lungs?

Options:

  1. Bronchi
  2. Alveoli
  3. Trachea
  4. Diaphragm

Correct Answer: Alveoli

Solution: 

The alveoli are tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide occurs.

Which structure is responsible for the exchange of gases in the lungs?

Practice Questions

Q1
Which structure is responsible for the exchange of gases in the lungs?
  1. Bronchi
  2. Alveoli
  3. Trachea
  4. Diaphragm

Questions & Step-by-Step Solutions

Which structure is responsible for the exchange of gases in the lungs?
  • Step 1: Understand that the lungs are the organs responsible for breathing.
  • Step 2: Learn that the lungs contain small structures called alveoli.
  • Step 3: Recognize that alveoli are tiny air sacs where gas exchange happens.
  • Step 4: Know that oxygen from the air enters the blood in the alveoli, and carbon dioxide from the blood is released into the alveoli to be exhaled.
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