Match parts of respiratory system with their functions worksheet

Instructions: Write the letter of the correct function in the bracket next to each part of the respiratory system .

Respiratory System Parts

1. Nose and Mouth  [     ] 
2. Trachea (Windpipe)  [     ] 
3. Lungs  [     ] 
4. Bronchi  [     ] 
5. Alveoli  [     ] 
6. Diaphragm  [     ] 

Functions

A. Small tubes that branch off from the trachea, carrying air into the lungs.

B. Tiny air sacs where oxygen enters the blood, and carbon dioxide leaves the blood.

C. Filters, warms, and moistens air as it enters the body.

D. Main organs of the respiratory system that allow oxygen to move into the blood.

E. A tube that connects the nose and mouth to the lungs, allowing air to pass through.

F. A muscle that moves up and down to help the lungs fill and empty air.

Bonus Question:
Why is it important for the alveoli to be surrounded by blood vessels?
(Hint: Think about how oxygen gets into the blood!)