Question

The lining of the digestive tract plays a defensive role, by protecting surrounding tissues against which of the following potential problems:

a) the corrosive effects of acids.
b) the corrosive effects of digestive enzymes.
c) mechanical stresses.
d) pathogens that are swallowed with food.
e) all of the above.

Answer 1

The answer is E.

Step-by-step explanation:

The lining of the digestive tract starts from the mouth and continues until the anus, covering it with mucosa that forms a protective layer against various things that could cause problems.

The digestive tract contains a lot of acid which has a very low pH level, it also contains a lot of digestive enzymes that can digest proteins in our tissues as well. Mechanical stress especially in our stomach can put a lot of pressure on the tissues and the lining of mucosa helps prevent that by decreasing it's effect. The lining also prevents pathogens that make their way into our digestive system through food to affect our stomach and colon by forming a protective layer between the environment and the tissues.

I hope this answer helps.