circulatory system

Question 1

the process by which living organisms exchange gases, primarily taking in oxygen and releasing carbon dioxide; breathing

Answer 1

respiration

Question 2

the process by which air enters your lungs

Answer 2

inhalation

Question 3

the action of sending air out of your lungs

Answer 3

exhalation

Question 4

alveole

Answer 4

microscopic balloon-shaped structures located at the end of the respiratory tree.
*They expand during inhalation, taking in oxygen, and shrink during exhalation, expelling carbon dioxide

Question 5

diaphragm

Answer 5

thin muscle below the lungs and heart that separates the chest from the abdomen