Respiratory System

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

• bronchi

• alveoli

• lungs

• oxygen

2. Flap of tissue that covers the opening to the windpipe during swallowing

• Trachea

• Epiglottis

• Pharynx

• bronchioles

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

5. The two narrower tubes branching from the trachea that leads into the lungs

• epiglottis

• bronchi

• Pharynx

• alveoli

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

• soft muscles

• intercostal muscles

• diaphragm

• alveoli

7. An air tube that is held open by C-shaped rings of cartilage. Also known as the windpipe.

• bronchi

• trachea

• lungs

• alveoli

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

• bronchi

• trachea

• lungs

• bronchioles

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