Starts with the teeth braking down the food into more soluable molecules, the stomache physically churns the food down. Giving food a larger surface area.
5 of 16
Describe chemical digestion?
these polymers cannot be physicall aborbed by the body into the blood stream, they have to be hydrollisised by adding water.
6 of 16
What happens in the mouth during disgestion?
Teeth break the food down into smaller molecules, salivary amylase is secreted from the salivary glands, hydrolysising starch to maltose, mucus and mineral salts also secreted, mucus lubricating food passage down.
7 of 16
What happens in the oesophagus during digesiton?
The food is transported down in waves of muscle contractions called peristalsis. mucus is secreted from the tissues to lubricate the foods passage down.
8 of 16
What happens with the stomache during digesiton?
The sotmache is a small sac with lots of folds for increased surface area, can hold up to 4 litres. Entrance and exit controlled by sphincter muscles. Gastric juice produced containign hydrochloric acid which sets the right conditions for the enzymes
9 of 16
What happens with the duodenum during digestion?
the acidic fluid chyme is them moved along the duodenum, where it is turned alkiline by bile produced and pancreatic juice.
10 of 16
what happens in the ileum during digestion?
Small soluable molecules are absorbed through the villi.
11 of 16
What happens in the large intestine during digestion ?
Salts minerals and water is absorbed it has folded wall for increased surface area, bacteria decomposes undigested nutrience which is stored in the rectum as faeces.
12 of 16
What neutrilises the acidity of the chyme in the duodenum?
Sodium hydrogencarbonate
13 of 16
In the stomache, the ezymes in gastric juice are...and break what down into>?
pepsn, which breaks down protiens to peptides, classed as protease.
14 of 16
In the pancreaus there is what enzymes, break what down into what?
Amylase, starch to maltose, carborhydrase. trypsin, chymotrypsin, breaks protiens to peptides, classed as protease. Carboypeptidase, peptides to amino acids, protease. Lipase, lipids to fatty acid glyserol, classed as lipase.
15 of 16
In the illeyum there is what enzymes, braking what into what/
maltase, breaking maltose to glucose, all carborhydrases. Sucrase, breaking sucrose to glucose, fructose. Lactase, braking lactose, glucose and sucrose. peptidase, braking peptides to amino acids, classed as protease.
Comments
No comments have yet been made