Which part of the digestive system is affected in celiac disease?

The disease due to inflammation of the vermiform appendix of the digestive system is known as:

Go through the following statements regarding the disorders of the digestive system. Choose the correct statements and select the appropriate option from the codes given below:
$I.$ Indigestion is caused by the poor supply of digestive enzymes,overeating,anxiety,and a lot of junk food.
$II.$ Constipation,an irregular movement of the bowel,is caused due to poor habits,a fiberless diet,emotional stress,and certain drugs.
$III.$ Indigestion can be caused by milk of magnesia.
$IV.$ Ejection of stomach content is controlled by the hypothalamus of the prosencephalon.

Jaundice is a disorder of

Which one of the following is $NOT$ a cause of diarrhea?

The Nobel Prize for Medicine was awarded for confirming the role of $Helicobacter \text{ } pylori$ in causing: