GI: Structure Flashcards
what structures make up the tubular GI tract
what are the GI system accessory organs
t/f most carb and lipid digestion happens in the mouth
what is the role of the tongue?
what is the role of the teeth?
in which part of the tubular GI tract does saliva play a role?
overall function of the mouth?
which part of the tubular gi tract does the swallowing reflex come into play?
whats the role of the epiglottis?
what is the swallowing reflex
does digestion occur in the esophagus
what is the role of the esophagus
where does the most digestion occur
three parts of the small intestine
role of the small intestine
what organs work with the small intestines
how does the liver help with digestion
how does the pancreas help with digestion
where do liver secretions come from
what happens in the large intestine
what are the parts of the small intestine
t/f no water is absorbed in the large int
why are people with inflamed colons more susceptible to dehydration
what are the four layers of the gi tract
what is the mucosa responsible for
what does the submucosa do
muscularis function
what does the serosa do
where are the submucosal plexus and myenteric plexus found
where are the villi found
what are the four spec cells of the mucosa
what do transport cells do
what do enteroendocrine cells do
what do exocrine cells do
what are the two type of exocrine cells and what do they do
where is the enteric nervous system found
myeneteric plexus role
submucosal plexus role
how do the two plexus work together to digest food
explain how an external stimulus leads to a digestive system response
explain how a local stimulus can lead to digestive system response (two ways)
what is the enteric nervous system
describe the three ways a stimulus can lead to digestive response
what is the function of parasymp control of the digestive system
where do parasymp nerves originate from and what do they do (GI tract)
achetylcholine is released onto the GI tract in which control system? what does this do?
overall function of symp control on digestive system
what does the symp system release on gi tract? role?
describe paths from symp chain in spinal cord to each part of the digestive tract
describe the three mechanisms for regulating digestive activities
what happens when you eat (ie: what happens to the three reg dig mechanisms)
explain blood pathway in splanchnic circulation
why do we need the hepatic portal vein
stomach is supplied by which artery
small int is supplied by which artery
large int is supplied by which artery
how is blood circulated in the villi
role of cappilaries in villi
what is the role of central lacteals
role of hepatic vein
where does hepatic portal vein bring blood from
where does sup mesenteric vein bring blood from
where does inf mesenteric vein bring blood from
where do gi veins go to
what kind of blood is in the liver
what does the central vein do
what do hepatocytes do
what kind of blood pools in sinusoids
what happens in the liver
what is absorbed from the gi tract and goes through the hep portal vein
what is secreted into the duodenum from the bile duct
what is secrete into the liver from the hepatic artery
what goes from the liver through the hep vein
