What happens if there is no mucus in the esophagus ?

What are the uses of mucus in saliva?

what are the functions of mucus?

What is the role of mucus in the food pipe ?

What is the role of mucus in stomach?

What is the role of mucus in stomach?

What makes the movement of the food bolus in the esophagus easy ?

What are the two kinds of muscles present in esophagus ?

What is the function of hairs and mucus in the nasal cavity?

A boy gets into a floating boat ? (a ) What happens to the boat ? (b) What happens to the weight of water displaced ? What happens to the buyount force on the boat ?