The common passage for both food and air is called the esophagus.

Which network comprises the lung?

Formation of oxyhaemoglobin is a/an ____

Human lungs are made up of _____

Partial pressure of oxygen in alveolar air is ____

____ prevents the food from entering into the glottis during swallowing.

Contraction in diaphgram causes increase in thoracic volume in the _____

Suffocation is caused due to_______