Chapter-3 Human Digetion And Absorption Flashcards
What is absorption?
The process by which substances are taken up from the GI tract enter the blood stream or the lymph
Is smell important to eating/ nutrition or survival?
Yes it is important connected to the deepest part of human kind.
What are the 5 types of taste?
Sweet - cake cookies
Salty- crackers chips
Sour - lemon sour patch kids
Bitter - black coffee vinegar and some dark chocolates
umami - green tea meat tomatoes carrots sea food ( savory due to glutamate aka amino acid)
From mouth to anus: list the steps of digestion.
Mouth Stomach Duodenum Small intestine Large intestine Rectum
Where does this happen in the digestive process?
Chemical and mechanical mastication saliva enzymes pH7 neutral
Mouth
Where does this happen in the digestive process?
pH 1-2 protein digestion begins helps with mineral absorption leaves as chyme.
Stomach
Where does this happen in the digestive process?
First part of the small intestine pH8 most digestion finishes here (ends) all absorption occurs here.
Duodenum
Where does this happen in the digestive process?
Main site of digestion and absorption due to the villi which increase surface area 6000X
Small intestine
Where does this happen in the digestive process?
3 1/2 ft long no villi or enzymes present final absorption of water.
Large intestine
Where does this happen in the digestive process?
Storage of feces until deification.
Rectum
What role does the liver play in digestion?
Liver cells break down fats and produce energy.
Takes toxic substances and makes nontoxic substances
What role does the gallbladder play in the digestion process?
Holds bile produced by the liver and is used to digest fatty foods in the duodenum of the small intestine
What does the pancreas play a role in the digestive process?
Digestive juices secreted into the small intestine to further break down food after it has left the stomach also produces insulin
What is digestion?
The process of food converted
