GI - Stomach Flashcards
Fold in the stomach are known as?
Rugae
Gastric juice is made up of
enzymes and hydrochloric acid
Chemical and Mechanical digestion break food down into?
Chyme
Functions of the stomach
Stores food
Mechanical digestion
Chemical digestion
Peristalsis
Anatomy of the stomach
Cardia
Fundus
Body
Pylorus
Cardia contains
Mucus glands
Fondus and body secrete
HCl
Enzymes
Pyloric sphincter controls
the exit from the stomach
The lining of the stomach wall is what type of cell?
Simple columnar epithelium
Types of columnar cells (5) in the stomach mucosa
Mucus surface cells Mucus neck cells Parietal cells Chief (zymogenic) cells Enteroendocrine cells
Digestive enzymes in the stomach?
Pepsinogen
Gastric lipase
Parietal cells secrete
HCl
Intrinsic factor
Enteroendocrine cells secrete
gastrin (hormone)
Hepatobiliary System consists of?
Liver
Gall Bladder
Pancreas
The liver, gall bladder and pancreas all empty into?
Duodenum via ducts
The pancreas GI function is
secretes pancreatic juice
Buffer to acidic chyme
The pancreas secretes digestive enzymes
Pancreatic amylase (Carbs) Trypsin (Proteins) Chymotrypsin (Proteins) Pancreatic lipase (fats)
The release of the pancreas secretes digestive enzymes controlled by
Hormones:
Secretin
Cholecystokinin (CCK)
Bile is produced by
the liver
Bile is stored in the
gallbladder
Bile consists of
water
bile salts
bile pigments (Bilirubin)
The release of bile is under
Hormonal control:
Cholecystokinin (CCK)
The hormonal release of bile is stimulated by?
Chyme in the duodenum
Bile assists with the digestion of
Lipids
