Question

please answer this and give reason too​

Answer 1

complete ingestion of food will not appear

Explanation:

mucus is secreted by mucus glands present in the oesophagus. Mucous soften the food and turn it into a circle like structure known as bolus.

Answer 2

Mucus plays an important role by protecting the inner lining of stomach from hydrochloric acid produced in the stomach . If mucus is not released, it will lead to corrosion of inner lining of stomach causing acidity and ulcers.