TRIPURA Class 10 - Respiration in Humans Videos

The pharynx forms the common passage for air and food in the human body.

You experience sudden coughing while swallowing food because of incomplete closure of the epiglottis which directs the food into the windpipe instead of the food pipe.

The trachea is lined with C-shaped cartilaginous rings which hold the shape of the trachea and prevent it from collapsing.

The alveoli have a large surface, thin membrane and rich network of blood capillaries which facilitate the smooth exchange of gases.