Human respiratory system quiz

Answer 1

Question 1: What is the main organ of the respiratory system?
a) Lungs
b) Heart
c) Liver
d) Kidneys

Question 2: Which of the following is not a part of the respiratory system?
a) Trachea
b) Bronchi
c) Stomach
d) Diaphragm

Question 3: What is the function of the respiratory system?
a) To transport oxygen to the cells and remove carbon dioxide from the body
b) To digest food and absorb nutrients
c) To pump blood throughout the body
d) To filter waste from the blood

Question 4: What are the tiny air sacs in the lungs called?
a) Alveoli
b) Bronchioles
c) Capillaries
d) Ventricles

Question 5: How do humans breathe?
a) Through their mouth
b) Through their nose
c) Both through their mouth and nose
d) Through their ears

Question 6: What is the purpose of the diaphragm in the respiratory system?
a) It helps control breathing by contracting and relaxing
b) It filters out dust and particles from the air
c) It produces mucus to keep the respiratory system moist
d) It transports oxygen to the cells

Question 7: What is the process called when air is taken into the lungs?
a) Inhalation
b) Exhalation
c) Respiration
d) Digestion

Question 8: What is the function of the cilia in the respiratory system?
a) They help filter out harmful substances from the air
b) They produce mucus to keep the respiratory system moist
c) They transport oxygen to the cells
d) They help control breathing

Question 9: What gas is exchanged in the alveoli of the lungs?
a) Carbon dioxide
b) Oxygen
c) Hydrogen
d) Nitrogen

Question 10: How many lobes does each human lung have?
a) 1
b) 2
c) 3
d) 4