What Happens To The Food In The Stomach?
Answer:
There are three things that happen to food in the stomach:
Physical digestion
Chemical digestion
Temporary storage of food
The food is broken down into smaller pieces by mechanically 'churning' it. This is done by the muscular wall of the stomach. As it contracts and relaxes, it cause the food particles to break down. This increases the surface area of food so that more surface is available to the enzymes for digestion and thus, the rate of digestion is faster. This is the physical digestion that happens contained by the stomach.
The stomach also releases gastric juices into the food. These are also thoroughly mixed with the food particles by the churning movement of the stomach wall. These gastric juice contain pepsinogen which is activated by the hydrochloric acid present in the stomach to pepsin. Pepsin is a protease and help in breaking down proteins into amino acids. Thus, stomach is also the site for protein digestion. This is how stomach brings about chemical digestion./
After the food is thoroughly mixed and churned, the result is a liquid mixture call 'chyme'. Chyme is then released into the small intestine in short bursts. It may be temporarily stored in the stomach as the amount that have passed on to the small intestines is being digested.
The stomach also absorbs some food stuffs through its walls and into thee blood stream like alcohol, aspirin and glucose.
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