For each of the deficiencies of digestive secretions A–E, select the most appropriate consequence from the list below

A. Option 2 Local infections. The flow of saliva helps to control the multiplication of bacteria in the mouth.

B. Option 1 Pale stools. Bile entering the alimentary tract is responsible for the normal brown colour of the stools.

C. Option 4 Milk intolerance. Lactase deficiency is seen in a proportion of the population. There is an inability to digest and absorb milk sugar. This results in an osmotic diarrhoea that can be a problem especially in babies where milk forms a large part of the dietary intake.

D. Option 3 Steatorrhoea. Steatorrhoea, the presence of unsplit fat in the faeces, is seen in the absence of pancreatic juice since dietary fat cannot be hydrolysed and consequently cannot be absorbed.

E. Option 5 Anaemia. A macrocytic anaemia develops because there is no intrinsic factor to facilitate the absorption of Vitamin B12.