Question

What would happen if alimentary canal does not secrete mucus​

Answer 1

There is a type of epithelial tissue called mucosa. It lines the airways, alimentary canal, biliary system, and genitourinary systems. It contains Goblet cells, which make mucus from blood borne materials and secretes it into luminal surfaces to lubricate, and maintain moist contact areas.

Answer 2

In absence of mucus, the alimentary canal would dry up and rupture due to friction with the bolus

Explanation:

• The alimentary canal is lined with an epithelial cell layer in which the mucus secreting cells remain scattered.
• These mucus secreting cells are known as the Goblet cells.
• The mucus has the following functions :

1. It helps to keep the alimentary canal moist and smooth so that the bolus and the digested food can easily pass  without any friction. Hence, the  lining of the alimentary canal is protected from getting torn.
2. It protects the epithelial cells in the stomach from getting disrupted by the corrosive action of hydrochloric acid.
3. It mixes with the bolus and keeps it soft so that the digestive enzymes can easily act on them.

• In absence of the mucus the above functions would be hindered.