Class 1 Flashcards
Nutritional Status
Type of diet, food intolerance, religious, cultural values, economic factors, physical conditions, emotional problems
GI tract
23-26 ft long
Mouth-esophagus-stomach-small and large intestine - rectum and Anus
Function of the Digestive Tract
Breakdown of food for digestion
Absorption of nutrients produced by digestion in the blood stream
Elimination of unanswered foodstuff and other waste products
Major Enzymes and Secretions
Mouth: Saliva, Salivary amylase, Ptyalin
- begin the digestion of starches
* water and mucus contains saliva to lubricate the food and help with swallowing
Stomach -Stores and mixes food with secretions
Pepsin- stores and mixes food with secretions
Stomach
Intrinsic factor -
secreted by the gastric mucosa helps with the digestion of vitamin B12
Hydrochloric acid
Highly acidic and is secreted by the glands of the stomach breakdown food into more absorbable components and aid in the the destruction of most ingested bacteria
Small intestine : Duodenum, Jejunum, ileum
Pancreas- secrets enzymes into the duodenum to breakdown protein, fats, and carbohydrates
Pancreas
Secreted a high concentration of bicarbonates to increase pH to neutralize the acid entering the duodenum
Trypsin - breakdown protein
Amylase - breakdown starch
Lipase - breakdown fats
Liver
Makes and secret bile
Process the blood coming from the small intestine contains nutrients
Purified the blood of many impurities before traveling to the rest of the body
Gallbladder
Storage sac for EXCESS bile
Bile made in the liver travels to small intestine via the bile ducts if the intestine does not bile then it travels to the gallbladder where it awaits (stored) until food is present
Helps to absorb fats in the diet and carried away waste from liver that cannot go into the kidney
Amylase
Starch
Lipase
Fats
Pepsin
Protein
Bile
Fat emulsion