Respiratory System
Biology ⇒ Human Biology
Respiratory System starts at 6 and continues till grade 12.
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See sample questions for grade 10
Describe how smoking affects the respiratory system.
Describe the difference between external and internal respiration.
Describe the effect of high altitude on breathing.
Explain the role of the diaphragm in breathing.
Explain the term 'cellular respiration' and its relationship to the respiratory system.
Explain why breathing through the nose is generally healthier than breathing through the mouth.
Explain why the left lung is smaller than the right lung.
A person inhales 500 mL of air per breath and breathes 12 times per minute. What is their minute ventilation?
Which gas is present in the highest concentration in exhaled air?
(1) Oxygen
(2) Nitrogen
(3) Carbon dioxide
(4) Hydrogen
Which of the following best describes the path of air from the nose to the alveoli?
(1) Nose → Pharynx → Larynx → Trachea → Bronchi → Bronchioles → Alveoli
(2) Nose → Larynx → Pharynx → Trachea → Bronchioles → Bronchi → Alveoli
(3) Nose → Trachea → Pharynx → Larynx → Bronchi → Bronchioles → Alveoli
(4) Nose → Bronchi → Trachea → Larynx → Pharynx → Bronchioles → Alveoli
Which of the following best describes the role of hemoglobin in the respiratory system?
(1) It digests food
(2) It transports oxygen in the blood
(3) It produces hormones
(4) It filters waste from the blood
Which of the following best explains why breathing rate increases during exercise?
(1) To decrease body temperature
(2) To supply more oxygen to muscles and remove more carbon dioxide
(3) To digest food faster
(4) To increase heart rate
During exhalation, the pressure inside the lungs is __________ than the atmospheric pressure.
Fill in the blank: The __________ are the first branches of the trachea that lead into each lung.
Fill in the blank: The __________ is a muscular tube that connects the throat (pharynx) to the lungs.
Fill in the blank: The main muscle involved in breathing is the __________.
True or False: Carbon dioxide is a waste product of cellular respiration that is exhaled from the body.
True or False: The bronchi branch into smaller tubes called bronchioles.
True or False: The larynx is located above the pharynx.
True or False: The pharynx is shared by both the respiratory and digestive systems.
