The Digestive System Flashcards
Chemical breakdown of bolus into chyme occurs in
The stomach
The stomach lies in which quadrant of the abdominal cavity
The upper left quadrant
what type of epithelium protects against abrasion of the oral cavity?
Thick squamous epithelium protects against abrasion
saliva begins the breakdown of food and is a catabolic or anabolic reaction?
catabolic
TRUE or FALSE: the oesophagus is a flat muscular tube that is collapsed when no food going down
TRUE
oesphagus smooth muscle is controlled by voluntary or involuntary control?
involuntary control = autonomic NS
mastication (mechanical breakdown of food by teeth) mainly involves voluntary ??? muscle
skeletal
mucosal barrier in the stomach provides a Thick ??? mucus on stomach wall
bicarbonate mucus on stomach wall
circular folds in the small intestine Force chyme to ‘spiral’ through lumen = slows ??? and maximises ???
slows travel and maximises
absorption potential
enterocytes refer to what part of the vili structuring?
epithelial cells
TRUE or FALSE: Emulsification refers to how bile reduces attraction
between fat molecules which ↑ SA in the small intestine
TRUE
Alimentary organs = mouth, pharynx,
oesophagus, stomach, ??? and ???
small intestine, large
intestine
Accessory Digestive
Organs (helpers) = teeth, tongue, gallbladder and glands: ??? and ??? and ???
salivary glands,
liver, pancreas
which ligament on the liver is a Foetal umbilical vein remnant?
the round ligament
which ligament suspends the liver from diaphragm?
coronary
hepatocytes radiate from a central vein in liver ???
liver lobules
in the portal triad, the portal vein is a branch of the ???
hepatic portal vein
in the portal triad, the portal artery is a branch of the ???
hepatic artery proper
the gallbladder stores ??? coming in from the liver
bile
Cirhhosis impairs the liver and occurs when ??? tissue replaces healthy living tissue
scar/dead
which carbohydrate saccharide type passes straight through the enterocyte whilst the others pass through brush border enzymes?
monosaccharides
why is the Small intestine the primary site of lipid absorption? (THINK: what supplies lipases)
because pancreas supplies most of the lipid-digesting enzymes (lipases)
TRUE or FALSE: Ileocecal valve usually closed, brain (neural) and
hormones signal opening
TRUE
what helps provide roughage for motility in the alimentary canal, helps move food along?
cellulose
