In a minute, a normal healthy human adult respires: (in $times$)

Select the correct statement.

Which is the most important muscular structure in the respiratory system of a rabbit?

An $A$ in the pulmonary volume $B$ the intra-pulmonary pressure to less than the atmospheric pressure which forces the air from $C$ to move into the lungs,i.e.,$D$. Choose the correct options for the blanks $A, B, C$ and $D$ to complete the above statement with reference to $NCERT$ textbook.

What is the most important function of the diaphragm in mammals?

Pick the correct statement.