2023.03.22_Revision Chapter 2 F3

The following shows the patway of air during exhalation.

Alveolus -> P -> Bronchus -> Trachea -> Q

What are P and Q?

• P: Larynx Q: Nose

• P: Pharynx Q: Larynx

• P: Bronchiole Q: Nose

• P: Nose Q: Bronchiole

Which of the following situations occur during inhalation?

• The diaphragm muscles relax

• The outer intercostal muscles relax

• The volume of the thoracic cavity decreases

• The air pressure in the lungs decreases

What is respiration?

• The oxidation of glucose to produce carbon dioxide, energy and water vapour

• The oxidation of glucose to produce oxygen, energy and water vapour

• The oxidation of glucose to produce carbon dioxide and water vapour

• The oxidation of glucose to produce energy and water vapour

What happens when we inhale? I The diaphragm relaxes and curves upwards II The diaphragm contracts and moves downwards III The rib cage moves upwards and outwards IV The rib cage moves downwards and inwards

• I and II

• II and III

• III and IV

• I and IV

Diagram shows the model of the breathing mechanism. What happens when the rubber sheet is pushed upwards?

• The balloons inflate

• The balloons shrink

• The glass jar shrinks

• The pressure in the glass jar decreases

The diagram below shows a model of the human respiratory system. What will happen when the rubber sheet is pulled down?

• The balloons expand

• The balloons swing

• The balloons contract

• The glass tube bends