Which respiratory pigment contains $Fe$ and is red in color?

Give the exact location of the lungs.

Which organ is common to both the digestive and respiratory systems?

The alveoli contain ..........

Given below are two statements regarding the respiratory system of man.
$Statement-I$: Epiglottis prevents the entry of food into the trachea.
$Statement-II$: The internal lining of the trachea is made up of ciliated epithelium only.
In the light of the above statements, choose the most appropriate answer from the options given below:

What is the function of the conducting part of the human respiratory system?