Ans - It is made up of the nasal chamber, nostril, larynx, pharynx, trachea, epiglottis, bronchioles, alveoli, bronchi, and lungs. Epiglottis is a flap-like structure covering the glottis and prevents the entry of food into the windpipe. The other parts of the human respiratory system are vital for the inhalation of oxygen and exhalation of carbon dioxide.