GI Kit

Line up the white label organsPlace each colored substance under the proper organ

Stomach, Parietal Cells

Duodenum, K-Cells

Pancreas, acinar cells

Pancreas, Islets of LangerhansAlpha cells

Pancreas, Islets of LangerhansBeta cells

Pancreas, Islets of LangerhansDelta cells

Stomach, Chief Cells

Stomach, G-Cells

Salivary GlandsLiver

Stomach

Duodenum

KEYYellow = fat enzymeGreen = protein enzymeRed = sugar enzymeBlue = hormonesOrange = substances

LipaseLipase Lipase Lipase

Amylase AmylaseSucrase Maltase Lactase

PepsinTrypsin

Chymotrypsin

Carboxypeptidase

Somatostatin

Insulin Glucagon

Motilin GIP

CCK Secretin

Gastrin

Bicarbonate Mucus Prostaglandins

Intrinsic factor Bile HCl

4

Organ Region of the Organ Substances FunctionPancreas Acinar cells Amylase (enzyme) Breaks down starch and carbohydrates into glucose

Acinar cells Lipase (enzyme) Breaks down fat into fatty acids

Acinar cellsProtease enzymes (trypsin,

chymotrypsin, carboxypeptidase)Breaks down proteins into amino acids and also kills intestinal parasites and bacteria

Acinar cells Bicarbonate (not an enzyme) Raises pH in duodenum

Islet of Langerhans;

Alpha cells glucagon (hormone)

Causes glycogenolysis, the process which breaks down glycogen into glucose to raise blood glucose. Also causes gluconeogenesis to make new glucose molecules

Islet of Langerhans;

Beta cells insulin (hormone)Removes glucose in bloodstream and brings it into cells. Lowers blood glucose levels.

Islet of Langerhans;

Delta cells Somatostatin (hormone) Inhibits gastrin, insulin, and glucagon (inhibits digestive system)

Liver Bile (a detergent) Emulsifies fat Lipase Breaks down fat

Salivary glands Amylase (enzyme) Breaks down starch and carbohydrates into glucose Lipase Breaks down fat

Stomach Mucous (not an enzyme) Protect the stomach liningProstaglandins (not an enzyme) Protect the stomach lining

Lipase Breaks down fat

Parietal cells HCl (not an enzyme) Allows Pepsinogen to be converted to pepsin, and it also kills bacteria

Parietal cells Intrinsic factor (not an enzyme)Allows Vit B12 to be absorbed, which is needed to make RBCs. Without it, you get megaloblastic (pernicous) anemia.

Chief cells Pepsinogen --> pepsin (enzyme) Breaks proteins into amino acids G cells Gastrin (hormone) Tells parietal cells to secrete HCl

Duodenum Secretin (hormone) Tells pancreas to secrete bicarbonate

CCK (hormone)Tells pancreas to secrete proteases and lipase, and tells gallbladder to release stored bile (stimulates fat and protein digestion)

Motilin (hormone) Initiates peristalsis and tells Chief cells to secrete pepsinogen

Maltase, Lactase, Sucrase (enzymes) Break down complex carbohydrates into glucose

K cells GIP (hormone)Tells pancreas to release insulin and also causes fat to be broken down into fatty acids