Level: JHS, Basic 8 | Subject: Integrated Science | Strand: Systems | Topic: The Human Body System (Respiratory System)
Read the summary notes first, then try these questions. Go back to the summary notes for this topic.
Part A has 20 tick-box questions. Part B has 5 essay questions with a marking guide at the bottom.
Test Yourself: 20 Objective Questions
Tick one answer for each question, then press Review answer. If your answer is wrong, it will be marked first, then the correct answer will show in green.
1. The tube that carries air from the nose to the chest is the
2. The trachea is kept open by rings of
3. The trachea divides into two tubes called
4. The tiny air sacs where gaseous exchange takes place are the
5. The correct path of air into the lungs is
6. The muscle under the lungs that helps in breathing is the
7. During inhalation the diaphragm
8. During inhalation the ribs move
9. During exhalation the air pressure in the lungs
10. Gaseous exchange in the alveoli takes place by
11. In the alveoli, oxygen passes
12. In the alveoli, carbon dioxide passes
13. Which gas is MORE in exhaled air than in inhaled air?
14. Which feature of the alveoli helps gaseous exchange?
15. The alveoli have a large surface area because
16. Mucus and hairs in the nose help to
17. The small blood vessels around the alveoli are called
18. Which habit damages the lungs?
19. A disease that affects the airways and causes wheezing is
20. Respiration is best described as
Essay Questions
- (a) Name the parts of the respiratory system that air passes through from the nose to the alveoli. (b) State one function of each. (6 marks)
- Describe what happens to the ribs and the diaphragm during inhalation. (4 marks)
- Explain how oxygen passes from the alveoli into the blood. (4 marks)
- State four features of the alveoli that make gaseous exchange fast. (4 marks)
- Suggest three ways of keeping the lungs healthy. (3 marks)
Essay Questions: Marking Guide for Teachers and Parents
- (a) Nose, trachea, bronchi, bronchioles, alveoli (any four correct in order, 2 marks). (b) Nose: filters, warms and moistens air; trachea: carries air; bronchi: carry air to each lung; alveoli: gaseous exchange (any four functions, 1 mark each).
- The ribs move up and out (1). The diaphragm contracts and flattens (1). The chest becomes bigger (1). Air pressure falls and air rushes into the lungs (1).
- The alveoli have very thin walls (1). They are surrounded by capillaries (1). Oxygen dissolves in the moisture on the wall (1). It diffuses into the blood because there is more of it in the alveoli than in the blood (1).
- Any four (1 mark each): very thin walls, large surface area, moist lining, rich supply of capillaries.
- Any three (1 mark each): do not smoke, avoid dust and smoke, exercise regularly, sit in well ventilated rooms, cover the mouth when coughing, visit a health worker early.
Education Always (education.inspiringalways.com). Original practice questions, not official WAEC or BECE questions.