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Digestive System
Organs and Functions
32
Biology
Undergraduate 1
11/17/2015

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Term
Salivary Glands
Definition
secrete saliva which contains digestive enzymes for carbohydrates; Accessory Organ
Term
Liver
Definition
Major metabolic Organ; Processes and stores nutrients; Produces bile for emulsification of fats; Accessory Organ
Term
Gallbladder
Definition
Stores Bile from liver; sends it to the small intestine: Accessory Organ
Term
Pancreas
Definition
Produces pancreatic juice, contains digestive enzymes and sends it to the small intestine; produces insulin and secretes it into the blood. Accessory Organ
Term
Mouth
Definition
teeth chew food; tongue tastes and pushed food for swallowing; Digestive tract organ
Term
Pharynx
Definition
Passageway where food is swallowed; Digestive tract organ
Term
Stomach
Definition
secrete acid and digestive enzyme for protein; mixes food w/ secretions and sends chyme to small intestine; extra layer of muscle in muscularis/ special layer or mucosa Digestive Tract
Term
Samll Intestine
Definition
mixes chyme with with digestive enzymes for final breakdown; absorbs most nutrient molecules into body; secretes digestive hormones into blood; Digestive tract
Term
Large Intestine
Definition
Absorbs water and salt to form feces, defication; digestive tract
Term
Rectum
Definition
Stores and regulates elimination of feces; digestive tract
Term
Anus
Definition
Controls the release of waste from the digestive tract
Term
esophagus
Definition
passageway where peristalsis pushes food to the stomach; digestive tract
Term
Mucosa
Definition
1.Inner layer of Gastrointestinal wall; secrete mucus to protect from enzymes;
Term
Submucosa
Definition
2. Under the Mucosa in GI wall; broad band of loose connective tissue containing nerves, blood, and lymphatic vessels, peyer's patches.
Term
Muscularis
Definition
3. Under the Submucosa in GI wall; 2 layers of smooth muscle; contraction causes peristalsis;
Term
Serosa
Definition
4.Outer Layer of GI Wall; part of peritoneum; secretes lubricating fluid;
Term
Salivary Amylase
Definition
Enzyme thatbegins chemical digestion of starch in the mouth.
Term
Incisors
Definition
chisel shaped teeth that bite
Term
Canines
Definition
pointed teeth that tear
Term
Premolars
Definition
Fairly Flat teeth that grind
Term
Molars
Definition
Flattened teeth that crush
Term
Rugae
Definition
deep folds in the mucosa of the stomach
Term
Pepsin
Definition
Enzyme in Gastric juice that breaks down proteins, hydrochloric acid, and mucus.
Term
duodendum
Definition
first 25cm of small inestine
Term
lactose intolerance
Definition
do not have the enzyme lactase can not digest lactose.
Term
Bile
Definition
solution of bile salts,ions, water, cholesterol, and bicarbonate, and bilirubin; helps in digestion of lipids stored in gallbladder; produced in liver.
Term
Cecum
Definition
first portion of large intestine; joins with small intestine; has appendix
Term
Colon
Definition
second part of LArge intestine; ascending, transverse, descending, and sigmoid
Term
rectum
Definition
last 20cm of large intestine; rectum opens at the anus
Term
Lacteal
Definition
blood capillaries, small lymphatic capillaries inside the villus of the small intestine.
Term
nutrient
Definition
required component of food that performs a physiological function in the body. Energy,growth, cellular metabolism.
Term
functions of digestive system
Definition
ingest, digest, absorb, eliminate
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