Science & Social Studies
Human Respiratory System
Grade 5 · Elementary
Answer every question first, then press Finish to see your score and explanations.
- Question 1 of 20Easy
The exchange of oxygen and carbon dioxide in the lungs happens in the ...
- Question 2 of 20Easy
The respiratory organ that filters and warms the incoming air is the ...
- Question 3 of 20Medium
When we breathe in (inhale), the diaphragm will ...
- Question 4 of 20Medium
A breathing disorder marked by shortness of breath due to narrowed airways is ...
- Question 5 of 20Hard
The correct order of the human respiratory path is ...
- Question 6 of 20Easy
The airway that connects the nose to the lungs and is reinforced by rings of cartilage is the ...
- Question 7 of 20Easy
The branches of the trachea that lead to the right and left lungs are called ...
- Question 8 of 20Easy
The process of pushing air out of the lungs is called ...
- Question 9 of 20Easy
The gas from the air that the body needs for breathing is ...
- Question 10 of 20Medium
The waste gas from respiration that is released through the lungs is ...
- Question 11 of 20Medium
When breathing out (exhaling), the diaphragm will ...
- Question 12 of 20Medium
The fine hairs and mucus inside the nose serve to ...
- Question 13 of 20Medium
The disease tuberculosis (TB) attacks the ...
- Question 14 of 20Medium
Cigarette smoke is very harmful to breathing because ...
- Question 15 of 20Medium
Alveoli have very thin walls so that ...
- Question 16 of 20Hard
Abdominal breathing happens because of the work of the ... muscle.
- Question 17 of 20Hard
When breathing in, air can enter the lungs because the air pressure inside the lungs becomes ...
- Question 18 of 20Hard
Vital capacity of the lungs is ...
- Question 19 of 20Hard
A drowning person may stop breathing because ...
- Question 20 of 20Hard
Air polluted by vehicle smoke can disturb breathing because ...