Digestion

Question 1

What is the function of accessory organs in digestion?

Answer 1

To facilitate mechanical digestion, absorption, secretion and excretion

Question 2

What is the function of the oesophagus in digestion?

Answer 2

To transport the bolus to the stomach and continue chemical digestion of starch

Question 3

What is the function of the stomach in digestion?

Answer 3

To break down the bolus and form chyme (when mixed with gastric juices)

Question 4

What is the function of the small intestine in digestion?

Answer 4

To neutralise the chyme and break down fats, carbohydrates and proteins, then absorb water and nutrients

Question 5

What is the function of the large intestine in digestion?

Answer 5

To absorb water, salts and vitamins

Question 6

What is the function of the rectum in digestion?

Answer 6

To egest waste products of digestion

Question 7

What are the steps in mammalian digestion?

Answer 7

1. Mechanical digestion from the teeth and chemical digestion in the mount (saliva)
2. Mechanical digestion in the churning of the stomach and chemical digestion in the stomach
3. Villi in the intestines absorb water and nutrients through simple diffusion, facilitated diffusion and active transport
4. Bacteria in the large intestine feed on unabsorbed material
5. Waste is eliminated