Digestion (2)

Biology

Not quite remember

I easily remember

Two parts of digestion

Physical digestion and chemical digestion

Epithelial cells

Are chief cells, parietal cells and mucous cell

Function of chief cells

Secrete pepsinogen

Function of parietal cells

Secrete hydrochloric acid

Function of mucous cells

Secrete mucus

The small intestine

Consists of duodenum, jejunum and ileum

Function of pancreas in digestions of carbohydrates, proteins and lipids in the small intestine

The pancreas secretes pancreatic amylase, trypsin and lipase into the duodenum through the pancreatic duct

Functions of bile (1)

Neutralise the acidic chyme

Functions of bile (2)

Prepare an alkali condition (pH 7.6–8.6) for enzyme action in the duodenum

Functions of bile (3)

Emulsify lipids by breaking down lipids into tiny droplets to increase surface area for lipase activity

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