1.

(1 pt) What is the name of the large dome-shaped muscle under your lungs that helps you breathe?

A.
nose

B.
mouth

C.
trachea

D.
diaphragm



2.

(1 pt) If your mouth is closed, which part of your respiratory system takes in air first as you breathe?

A.
nose

B.
mouth

C.
trachea

D.
diaphragm


3.

(1 pt) What is the name of the long tube that runs from your mouth and connects to the lungs?

A.
nose

B.
mouth

C.
trachea

D.
diaphragm


4.

(1 pt) Which part of the respiratory system, which also helps with food digestion, helps the body take in air?

A.
nose

B.
mouth

C.
trachea

D.
lungs


5.

(1 pt) Which part of the respiratory system is the spongy organ that takes in air through the trachea?

A.
nose

B.
mouth

C.
trachea

D.
lungs