During the act of swallowing,which of the following structures prevents the food bolus from entering the glottis?

The lungs of humans and rabbits are . . . . . . .

If a tiny particle is placed in the pore of a stoma,what will happen?

The figure shows a diagrammatic view of the human respiratory system with labels $A, B, C$,and $D$. Select the option which gives the correct identification and main function and/or characteristic.

In the human respiratory system,the conducting zone extends from $:-$

Which of the following is a very unique feature of the mammalian body?