HUMAN DIGESTIVE SYSTEM

Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?

• Absorption of vitamins.

• Starch breaking down into sugars.

• Proteins breaking down into amino acids.

• Fats breaking down into fatty acids and glycerol.

The contraction and expansion movement of the walls of the food pipe is called:

• translocation

• transpiration

• peristaltic movement

• digestion

The exit of unabsorbed food material is regulated by

• liver

• anus

• small intestine

• anal sphincter

A gland not associated with the alimentary canal is

• liver

• salivary glands

• pancreas

• adrenal

Which of the following are chiefly digested in the stomach?

• Carbohydrates

• Proteins

• Lipids

• Fats

Large intestine in man mainly carries out

• absorption

• assimilation

• digestion of fats

• digestion of carbohydrates

The part of the digestive system where no digestion takes place is

• ileum

• stomach

• mouth

• oesophagus

Which part of alimentary canal receives bile from the liver?

• Stomach

• Small intestine

• Large intestine

• Oesophagus

Assertion: All proteins in our food are digested in small intestine only.

Reason: The protein digesting enzymes are released onto small intestine.

• (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

• (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

• (c) Assertion is true but the Reason is false.

• (d) The statement of the Assertion is false but the Reason is true.

The teeth covered with a sticky, yellowish layer of food particles and bacteria is called______________