Essay On Digestion

1070 Words 5 Pages
Register to read the introduction… The enzymes in the stomach break down food as well as kill bacteria.
What cells in the stomach function to form enzymes and acids?
Parietal cells in the stomach create hydrochloric acid and pepsin which digests proteins.
Why doesn’t gastric juice digest the inside of the stomach?
The stomach mucosa that lines the stomach is able to resist the juices of the stomach acid.
What are sphincters and how are they related to the stomach?
The first is the cardiac sphincter located at the top of the stomach, separating the stomach from the esophagus. The second is the lilac sphincter, at the bottom of the stomach separating the small intestines from the stomach. The two sphincters regulate how much goes in and out of the stomach.
What mechanical and chemical digestion occurs in the stomach?
The muscles in the stomach act as a mixer and grinder of the food. This is the mechanical part of the digestion. The chemical digestion occurs when the acids are excreted from the lining of the stomach to break down the proteins.

3. Small Intestine and Large Intestine
What are the three sections of the small intestine and what role does each section play in digestion or
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How does the large intestine help maintain a water balance in the body?

4. Pancreas, Liver and Gallbladder
What are the size and the location of the pancreas?
What are the different functions of the pancreas, and how is the pancreas directly related to digestion?
How does the pancreas connect to the rest of the digestive system?
What enzymes are produced by the pancreas and what are their functions?
How is insulin related to the digestive system?
What is the size of the liver and where is it located?
How does the liver function in relation to digestion?
What are other functions of the liver in the body?
What is the relationship between the liver and the gallbladder?
What is the function of bile and where does it enter the digestive tract?

Each group will be assigned one of the following bites of food. First, think about the class of molecule this food item represents and then identify the specific enzymes that would break this polymer into monomers. Remember to describe features that help mechanically digest this bite. Depending on your food item, you may need to do some additional research.
Bread
Butter
Steak
Celery

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