Human Respiratory System Quiz with Answers for Grade 6

🫁 Quick Study Guide

• 👃 Nose: The entry point for air into your body. It filters, warms, and moistens the air.
• 🗣️ Pharynx (Throat): A passageway for both air and food.
• 🫁 Larynx (Voice Box): Contains the vocal cords, which vibrate to produce sound.
• 💨 Trachea (Windpipe): A tube that carries air from the larynx to the lungs.
• 🌿 Bronchi: Two tubes that branch from the trachea, one going to each lung.
• 🌳 Bronchioles: Smaller branches of the bronchi inside the lungs.
• 🎈 Alveoli: Tiny air sacs in the lungs where oxygen and carbon dioxide exchange occurs.
• 💪 Diaphragm: A muscle below the lungs that helps with breathing. When it contracts, it increases the volume of the chest cavity, allowing you to inhale. When it relaxes, it decreases the volume, allowing you to exhale.
• 🔄 Gas Exchange: The process where oxygen moves from the air into the blood, and carbon dioxide moves from the blood into the air in the alveoli.

🧪 Practice Quiz

1. What is the main function of the respiratory system?
   1. A. To digest food
   2. B. To transport blood
   3. C. To exchange gases
   4. D. To pump blood
2. Which part of the respiratory system is also known as the windpipe?
   1. A. Larynx
   2. B. Pharynx
   3. C. Trachea
   4. D. Bronchus
3. What are the tiny air sacs in the lungs where gas exchange takes place called?
   1. A. Bronchioles
   2. B. Alveoli
   3. C. Capillaries
   4. D. Diaphragm
4. Which muscle helps in breathing by contracting and relaxing?
   1. A. Biceps
   2. B. Diaphragm
   3. C. Triceps
   4. D. Heart
5. Which part of the respiratory system contains the vocal cords?
   1. A. Trachea
   2. B. Larynx
   3. C. Pharynx
   4. D. Bronchus
6. What is the process of moving air into and out of the lungs called?
   1. A. Circulation
   2. B. Digestion
   3. C. Respiration
   4. D. Excretion
7. Which of these is NOT a function of the nose in the respiratory system?
   1. A. Filtering air
   2. B. Warming air
   3. C. Moistening air
   4. D. Digesting food