Quiz on the Respiratory System

Multiple Choice Questions

1. What is the main function of the respiratory system?

   • A. To provide oxygen to the body
   • B. To remove carbon dioxide from the body
   • C. To regulate body temperature
   • D. To filter the blood

2. What is the name of the organ that filters air before it enters the lungs?

   • A. Nasal cavity
   • B. Trachea
   • C. Bronchi
   • D. Alveoli

3. What is the name of the tiny air sacs in the lungs where gas exchange takes place?

   • A. Nasal cavity
   • B. Trachea
   • C. Bronchi
   • D. Alveoli

4. What is the name of the tube that connects the throat to the lungs?

   • A. Nasal cavity
   • B. Trachea
   • C. Bronchi
   • D. Alveoli

True/False Questions

1. The respiratory system is responsible for providing oxygen to the body.

   • True
   • False

2. The trachea is the tube that connects the throat to the lungs.

   • True
   • False

3. The alveoli are tiny air sacs in the lungs where gas exchange takes place.

   • True
   • False

4. The bronchi are the organ that filters air before it enters the lungs.

   • True
   • False

Fill-in-the-Blank Questions

1. The __________ is the organ that filters air before it enters the lungs.

2. The __________ are the tiny air sacs in the lungs where gas exchange takes place.

3. The __________ is the tube that connects the throat to the lungs.

Short Answer Questions

1. What is the process by which oxygen enters the body and carbon dioxide leaves the body?

2. Describe the structure of the respiratory system.

Answer Key

1. A
2. A
3. D
4. B
5. True
6. True
7. True
8. False
9. Nasal cavity
10. Alveoli
11. Trachea
12. The process by which oxygen enters the body and carbon dioxide leaves the body is called respiration. During respiration, oxygen is inhaled into the lungs, where it is absorbed into the bloodstream. Carbon dioxide is then exhaled from the lungs.
13. The respiratory system is made up of the nose, throat, trachea, bronchi, and lungs. The nose and throat filter and warm the air before it enters the lungs. The trachea is a tube that connects the throat to the lungs. The bronchi are two tubes that branch off from the trachea and lead to the lungs. Inside the lungs, the bronchi branch into smaller tubes called bronchioles, which lead to tiny air sacs called alveoli. The alveoli are where gas exchange takes place.

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Respiratory System Practice Sheet

1. What is the main function of the respiratory system? A. To provide oxygen to the body B. To remove carbon dioxide from the body C. To regulate body temperature D. To maintain blood pressure

2. What are the two main parts of the respiratory system? A. Lungs and nose B. Lungs and throat C. Nose and throat D. Mouth and nose

3. What is the name of the organ that filters out dust and other particles from the air we breathe? A. Lungs B. Trachea C. Nose D. Nasal Cavity

4. True or False: The respiratory system is responsible for the exchange of oxygen and carbon dioxide. True False

5. What is the name of the air sacs in the lungs where oxygen and carbon dioxide are exchanged? A. Bronchi B. Alveoli C. Bronchioles D. Trachea

6. What is the name of the tube that connects the mouth and nose to the lungs? A. Trachea B. Bronchi C. Alveoli D. Bronchioles

7. True or False: The diaphragm is the main muscle used for breathing. True False

8. What is the name of the process that occurs when oxygen enters the body and carbon dioxide is expelled? A. Cellular respiration B. Gas exchange C. Ventilation D. Oxygenation

9. What is the name of the process that occurs when air is drawn into the lungs? A. Inhalation B. Exhalation C. Cellular respiration D. Gas exchange

10. True or False: The lungs are the only organs involved in the respiratory system. True False

Answer Key: 1. B 2. A 3. D 4. True 5. B 6. A 7. True 8. B 9. A 10. False