Biology for IGCSE & O level - Gas Exchange In Humans (Section 4 - No. 38)
Which of the following are processes that occur during inhalation? (Select all that apply)
The diaphragm contracts and moves downwards.
The rib cage moves upwards and outwards.
The volume of the thoracic cavity increases.
The pressure in the lungs increases.
Explanation
Inhalation involves the expansion of the chest cavity, increasing its volume and reducing the pressure, allowing air to flow in.
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