Alimentary System Flashcards
What do chief cells produce?
Pepsinogen
What do parietal cells produce?
HCL and intrinsic factor
What do endocrine cells produce?
Gastrin
What type of epithelium is present in the stomach?
Simple columnar with gastric pits
What type of epithelium is present in the oesophagus?
Stratified squamous (non-keratinising) epithelium
What type of muscle makes up the oesophagus?
Upper 1/3 - skeletal
Middle 1/3 - mixed
Lower 1/3 - smooth
What type of glands does the duodenum contain and what do they secrete?
Brunner’s glands, alkaline secretion
Which part of the small intestine receives the common bile duct from the gallbladder?
What does it receive from their?
Duodenum
Bile, pancreatic juice
What type of epithelium lines the small bowel?
Simple columnar epithelium
What does the pancreas produce?
Exocrine - bicarbonate ions and digestive enzymes
Endocrine - islets of Langerhans produce insulin, glucagon, somatostatin
What are some of the functions of the liver?
Protein synthesis Inactivation of hormones and drugs Excretion of waste Produces bile Metabolises material absorbed from GI tract Stores glycogen Releases glucose
What are the portions of the large bowel?
Caecum
Colon - ascending, transverse, descending, sigmoid
Rectum
What are haustrations of the large intestine?
Ring like circular muscle
What are epiploic appendices?
Pouches of peritoneum filled with fat which line the colon
What is the blood supply of the GI tract?
Coeliac trunk
Superior mesenteric artery
Inferior mesenteric artery
