Parts of the respiratory system and their roles
This type of question, asked 4 times: 2023, 2024, 2025, 2026. All 7 questions below, oldest first.
Try each one first, then open its answer.
Question 1
2023
29 (b)(i) In the human respiratory system, name the following : (I) Part where air is filtered by fine hairs and mucus lining (II) Part which separates chest cavity from abdominal cavity (III) Balloon like structures where exchange of gases takes place (IV) The two large air passages that lead from trachea to the lungs (ii) List any two characteristics of lungs which make it an efficient respiratory surface.Question 2
2023
24Write one important function each of the following in the human respiratory system : (a) Rings of Cartilage (b) Alveoli (c) Haemoglobin (d) Lining of mucusQuestion 3
2024
29(i) Why is respiratory pigment needed in multicellular organisms with large body size ? (ii) Give reasons for the following : (a) Rings of cartilage are present in the throat. (b) Lungs always contain a residual volume of air. (c) The diaphragm flattens and ribs are lifted up when we breathe in. (d) Walls of alveoli contain an extensive network of blood vessels.Question 4
2024
10In human respiratory system, when a person breathes in, the position of ribs and diaphragm will be :Tap an option to check your answer.
Question 5
2025
35 (b)(i) State the role of rings of cartilage present in the throat. (ii) Discuss the role of the ribs and diaphragm when air is taken in during the breathing cycle. (iii) Why do we get muscle cramps during heavy exercise ? Explain.Question 6
2026
13(a) Draw a neat diagram of the human respiratory system and label its lungs, trachea, bronchi and alveoli. (b) State the roles of the following in the process of respiration : (i) Alveoli (ii) Respiratory pigmentsQuestion 7
2026
10What is the function of diaphragm in human respiratory system ? Where is it present in human body ?