Respiratory System

1. The air sacs that are covered with capillaries where gas exchange takes place

• bronchi

• alveoli

• lungs

• oxygen

3. The only externally visible part of the respiratory system

• eyes

• mucus

• Pharynx

• nose

4. Which part of the Respiratory System plays a major role in speech? Also known as the voice box.

• epiglottis

• food pipe

• Pharynx

• larynx

6. The large muscle that contracts and relaxes and moves air in and out of the lungs.

• soft muscles

• intercostal muscles

• diaphragm

• alveoli

8. The air tubes in your lungs branch off into smaller, narrower tubes called

• bronchi

• trachea

• lungs

• bronchioles

8. The air tubes in your lungs branch off into smaller, narrower tubes called

• bronchi

• trachea

• lungs

• bronchioles

9. Tiny hair like structures that line your nose and most other airways of the respiratory system.

• mucus

• nostril

• cilia

• hair

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

• to remove oxygen from the body and deliver carbon dioxide

• to bring oxygen to the body

• to break down food and absorb nutrients

• to provide oxygen and remove carbon dioxide from the body

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body

• to remove oxygen from the body and deliver carbon dioxide

• to break down food and absorb nutrients

• get energy from food

What are the main organs of the respiratory system of human that allow us to breathe and for gas exchange to happen?

• trachea

• heart

• lungs

• diaphragm