IGCSE C7 DIgestive System

What is organ R?

Define the term ingestion

• The movement of nutrients from the digestive system into the blood

• The removal of undigested food from the body

• The breaking down of large insoluble molecules into small soluble molecules

• The taking in of nutrients.

Define the term digestion

• The movement of nutrients from the digestive system into the blood

• The removal of undigested food from the body

• The breaking down of large insoluble molecules into small soluble molecules

• The taking in of nutrients.

What gland produces amylase?

• Liver

• Gall bladder

• Salivary gland

• stomach

Define the term mechanical digestion

• The breaking down of large food molecules by the use of enzymes.

• The physical break down of food done by the teeth or the muscles in the stomach.

What is absorbed into the blood from the large intestine?

• Digested nutrients

• Fibre

• Water

• Chyme

What is the role of bile in digestion?

• Emulsifies fat

• Kills bacteria

• Acidifies stomach acid

• Turns food into a bolus

What is the job of the pancreas in digestion?

• Produces acid

• Produces bile

• Produces digestive enzymes

• Produces chyme

VILLI ARE PRESENT IN ????

• LARGE INTESTINE

• SMALL INTESTINE

• LIVER

• GALL BLADDER

Which one of the following pairs of food components in humans reaches the stomach totally undigested?

• Protein and starch

• Starch and fat

• Fat and cellulose

• Starch and cellulose