Breathing and Exchange of Gases

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

Entry of food into trachea is prevented by ___________.

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

Match the parts of respiratory system given in column I with their respective functions in column II and choose the correct option given below. Column IColumn IIA. Mesethmoid cartilageI. separates thoracic and abdominal…

Arrange the following in order of increasing volume (P) Residual volume (Q) Tidal volume (R) Inspiratory reserve volume (S) Expiratory reserve volume

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

The oxyhaemoglobin dissociation curve shifts towards left due to increase in ___________?

Which one of the following parts of the pharynx is the continuation of the internal nares?

Which special feature among the following is seen in frogs for gaseous exchange through the skin?

Following are the parts of upper respiratory system i) External nares ii) Nasal cavities iii) Internal nares iv) Nasopharynx v) Larynx vi) Trachea Choose the correct answer from the options given below:

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

Which of the following doesn't happen during inspiration?