Breathing and E...

Which of the following symptom is associated with disease emphysema?

$$CO_2$$ transported as bicarbonate form is about:

Select the correct option regarding general characters of insects.

Combination of haemoglobin with $$O_2$$ in lungs can be promoted by

Lungs made up of which structures 

If a person exhales out forcefully by applying all his efforts, what will be the pulmonary volume inhaled by him immediately under the normal condition without applying any extra effort?

An example to cutaneous respiration

Carbon dioxide generated in the tissues is carried in venous blood primarily as 

Oxyhaemoglobin dissociates into oxygen and deoxyhaemoglobin at

The lungs are protected by two membranes called ________