Human Respiratory System — Prelims Questions

Which of the following statements about the transport of gases in human blood is correct?

During inspiration, the diaphragm contracts and flattens. What is the immediate consequence of this action?

The partial pressure of oxygen ($P_{O_2}$) in the alveolar air is approximately:

Which of the following conditions would cause a 'right shift' in the oxyhemoglobin dissociation curve?

Which of the following structures is responsible for preventing the collapse of the trachea?

Which of the following statements correctly describes the 'chloride shift' during carbon dioxide transport?