Breathing and Exchange of Gases

In the given diagram, what should be P, Q, R and S respectively?

Which one of the following is NOT a respiratory center which regulates breathing in human?

________ is a common respiratory illness characterized by inflammation of the lungs, cough and fever, chills, shortness of breath.

Which of the following statements are correct? (A) Intrathoracic pressure decreases during inspiration. (B) Activation of pneumotaxic center stimulates inspiration. (C) During expiration, pressure gradient operates from…

Before the formation of oxyhaemoglobin, the $\text{O}_2$ has to pass through _________ membranes from the alveolar air.

In the lungs, the alveolar air is separated from blood by ______.

Which of the following doesn't happen during inspiration?

Which of the following does NOT occur during inspiration ?

Match the Column- I with Column- II. Column- I (Disorder)Column- II (Symptoms)A) EmphysemaI) Difficulty in breathing, constriction of bronchiolesB) LaryngitisII) Breakdown of alveoli and shortness of breath.C)…

The partial pressure of oxygen of blood in pulmonary capillaries is ----(i)---- mmHg while in alveolar air it is -------(ii)----- mmHg?

Which one of the following respiratory disorders is NOT caused by bacteria or viruses?

We can voluntarily change our pattern of breathing because the respiratory centre __________.