week 8 - gastrointestinal tract Flashcards
what are the GIT accessory glands ?
salivary, liver, gall bladder, pancreas
layers of GIT
serosa -> muscularis -> submucosa -> mucosa -> lumen
what are the 2 types of muscles in muscularis ?
cylindrical & longitudinal
what makes up the musocsa ?
muscularis mucosae -> lamina propria -> epithelium
what are the 3 parts of the oseophagus ?
cervical -> thoracic -> abdominal
parts of the stomach
eosophagus -> gastroesophagul/cardiac junction -> cardia -> fundas -> body of corpus -> antrum -> pylorus -> pyloric sphincter
what is the texture of the stomach inside ?
rugae
parts of the small intestine
duodenum -> jejunum -> ileum
where are the 2 papilla ?
on the medial wall of duodenal wall - lesser papilla above greater papilla
what is the mesentry ?
double layer peritoneum suspending jejunum and ileum containing blood vessels and nerves
parts of the large intestine
ileum -> veriform appendix & cecum -> ascending colon -> right flexture (hepatic) -> transverse colon -> left flexture (spleenic) -> descending colon -> sigmoid colon -> rectum -> anal canal -> anus
what are haustrations ?
sacculations / bulge
function of small intestine
segmentation/digestion/absorption of nutrientd
function of large intestine
resorption of water
formation & expulsion of faceces
what are taeniae coli and how many are there ?
longitudinal bands of outer smooth muscle layer on the colons of large intestine
where is the gall bladder >
sits under the liver
describe the ducts connecting the liver to the small intestine
R.H duct & L.H duct form common heptic duct -> C.H duct & gall bladder cystic duct form common bile duct -> C.B duct & pancreatic duct form Ampulla of vater / hepatopancreatic ampulla
what are hepatic lobule ?
functional unit of liver
- filled with hepatocytes
- have portal triads on the edges (bile duct, hepatic artery, portal vein)
- bile canaliculi (thin tubes connecting bile)
- central vein with hepatic sinusoids projecting towards centre
types of teeth
incisors, canine, premolars, molars
3 types of salivary glands
- sublingual glands with ducts inferior tongue
- submandibular gland with duct inferior tongue
- paratod gland with duct posterior tongue
4 types of papillae on tongue
- everywhere -> fungiform (red) & filliform (white)
- edges -> foliate
- form V -> circumvallate
2 types of tongue tonsils
palatine posterior edges & lingual posterior tongue
which liver lobe is larger ?
right
what are the 4 lobes in the liver lobe ?
left, caudate, quadrate, right
