Flashcards
GIT
Cards in this deck (13)
- 1layers of oesophagus/stomachSerosa/adventitia
Muscularis externa
submucosa
mucosa
lumina - 2Serosa (mesothelium) (Adventitia in some parts)simple squamous epithelium
Loose CT
support, protection against friction
lines cavities open to environment
secretes slippery fluid - 3Muscularis externaskeletal muscle - outer longditudal, inner circular
smooth muscle - peristalsis, moves stuff along, nerves run through it
voluntary and involuntary control over swallowing - 4SubmucosaLoose CT
submucosal plexus: stimulates secretion
BV, glands
more nerve fibres along interstitial layer - 5Mucosaepithelium
lamina propria
muscularis mucosa - 6Pancreasexocrine cells secrete juice into common duct
endocrine cells secrete insulin directly into blood
alpha cells produce glucagon needed to break down glycogen in kidneys - 7Livermetabolises carbs, proteins and lipids
produces bile
neutralises/modifies substances
synthesis of proteins
stores glycogen and secretes when needed
recycles and gets rid of old blood cells - 8Portal Triad:common bile duct
hepatic portal vein
hepatic portal artery - 9Sinusoids Cannaliculi+carry blood in to central veins out of liver and hepatic vein into Inferior VC
+carry bile to bile duct then hepatic ducts
=separated by hepatocytes, sealed by tight junction - 10protection of stomachcells replace every 3/5 days
secretions of thick mucus
tight junctions prevent acid seeping into underlying lamina propria - 116 stages of digestion– Ingestion
– Secretion
– Mixing and
Propulsion
– Mechanical &
Chemical Digestion
– Absorption
– Defaecation - 12Oesophagus epitheliumnonkeratinised
stratified squamous
epithelium - 13Cells in the stomachMucous cells
Parietal cells
Chief (zymogenic) cells
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- University Biology Flashcards on GIT, created by Bethan Kelly on 09/05/2016.
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- Bethan Kelly
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