General Science-Digestive and Excretory System Flashcards
What is the name of the enzyme that saliva contains?
Salivary Amylase
Salivary Amylase break down what?
Starch
Chewing (teeth + tongue aid)
Mechanical Digestion
From the mouth, the food moves into what?
Esophagus
How does the food get pushed down through the esophagus and into the stomach?
Contractions
In the stomach, the food is mixed with what two substances?
Gastric Acids
Pepsin
Gastric Acids + Pepsi help break down what?
Protein
Where does most of digestion take place?
Small Intestine
How long is the Small Intestine?
About 23 Ft.
Food is completely broken down by enzymes in where?
The Small Intestine
In the Small Intestine, where are the enzyme origins?
The Small Intestine Walls
Pancreas
Liver
The acids produced by the pancreas contain what?
Lipase
Converts fat to glycerol and fatty acids.
Lipase
This breaks down complex carbohydrates into simple sugars.
Pancreatic Amylase
This converts polypeptides (molecules that compose proteins) into amino acids.
Trypsin
This is produced by the liver, aids in digestion by emulsifying fat (physically separating it into individual molecules.)
Bile
All digested substances are absorbed in the small intestine except what 2 substances?
Fatty Acids
Glycerol
When substances are absorbed in the small intestine, they are through the what?
Capillaries that carry blood into the liver and rest of the body.
The Large Intestine is aka the what?
Colon
In the Colon, what two things get absorbed back into the body?
Water and Minerals
What substances are filtered from the blood by the kidneys?
Chemical Waste Urea Excess Salt Minerals Water
From the kidneys, waste is secreted into what?
Urine
How is Urine transported to the bladder?
From the kidneys through the ureters.
Solid waste is stored where?
Rectum
