Which system is the most responsible for breathing?
a. Circulatory System
b. Respiratory System
c. Diaphragm System
b. Respiratory System
What is the first step in the Respiratory System process?
(something like...)
You breathe in oxygen
Oxygen enters the body through the nose or mouth
What body organ is shown in the picture above?
Put these steps in order from what happens first...
a. oxygen moves into alveoli
b. the oxygen feeds the body cell
c. the oxygen is carried into the red blood cell
A C B
a. oxygen moves into alveoli
c. the oxygen is carried into the red blood cell
b. the oxygen feeds the body cell
What are the air tubes/branches inside of the lungs?
a. Bronchial Tubes
b. Trachea
c. Diaphragm
d. Red Blood Cells
a. Bronchial Tubes
As your diaphragm moves up, the lungs will _____.
a. contract (get smaller)
b. expand (get bigger)
A. Contract
When the diaphragm moves up, there is less space available, so the lungs CONTRACT, or get smaller.
What are the tiny air sacs at the end of the bronchioles/bronchiole tubes?
a. ravioli
b. capillaries
c. alveoli
d. body cell
c. alveoli
Put these steps in order from what happens first to the end...
a. You breathe in oxygen
b. There oxygen moves from your lungs to your bronchiole tubes
c. The oxygen travels down the trachea
ACB
a. You breathe in oxygen
c. The oxygen travels down the trachea
b. There oxygen moves from your lungs to your bronchiole tubes

What is the body part that is a windpipe/tube that leads to your lungs?
a. diaphragm
b.alveoli
c. trachea
c. trachea
As your diaphragm moves down, the lungs will _____.
a. expand (get bigger)
b. contract (get smaller)
A. Expand
When the diaphragm moves down, there is more space available, so the lungs EXPAND, or get bigger.
List the 6 steps/ways oxygen moves for the Respiratory System.
(something similar to...)
1. You breathe in oxygen
2. Oxygen travels through the trachea
3. Oxygen moves to the lungs
4. Oxygen goes into the brachial tubes and then alveoli
5. The oxygen spreads to the blood vessels; red blood cells
6. Oxygen feeds body cell; turning into CO2 and coming back out the mouth/nose