Respiratory System
Biology ⇒ Human Biology
Respiratory System starts at 6 and continues till grade 12.
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See sample questions for grade 6
Describe how the respiratory system and circulatory system work together.
Describe how the respiratory system helps remove waste from the body.
Describe what happens to the chest cavity when you exhale.
Explain the difference between inhalation and exhalation.
Explain why breathing is important for humans.
Explain why it is important to breathe through your nose instead of your mouth.
Name the tiny air sacs in the lungs where gas exchange takes place.
What happens to the diaphragm when you inhale?
Which of the following best describes the function of the bronchi?
(1) They pump blood
(2) They carry air from the trachea to the lungs
(3) They digest food
(4) They produce hormones
Which of the following best describes the path of air as it enters the body?
(1) Nose → Trachea → Bronchi → Lungs
(2) Mouth → Esophagus → Stomach
(3) Nose → Lungs → Heart
(4) Mouth → Trachea → Stomach
Which of the following is a function of the respiratory system?
(1) Pumping blood
(2) Breaking down food
(3) Supplying oxygen to the body
(4) Producing urine
Which of the following is NOT a function of the respiratory system?
(1) Producing sound
(2) Supplying oxygen
(3) Removing carbon dioxide
(4) Digesting food
Fill in the blank: The ________ are tiny hair-like structures in the nose that help trap dust and germs.
Fill in the blank: The ________ are two branches that lead from the trachea into the lungs.
Fill in the blank: The ________ divides into two bronchi, each leading to a lung.
Fill in the blank: The ________ is a flap of tissue that covers the trachea when we swallow.
True or False: Breathing rate increases during exercise.
True or False: Oxygen is transported in the blood by red blood cells.
True or False: The diaphragm is a muscle that helps us breathe.
True or False: The left lung has two lobes and the right lung has three lobes.
