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Sono Ch 16 Pancreas
Terms in this set (77)
most of the pancreas is?
small portion of the pancreas head is surrounded by?
the pancreas is split into 5 parts, what are they?
the head is cradled in the C loop of the?
the head is located directly anterior to the?
two vessels may be identified at the head of the pancreas, what are they?
common bile duct (posterolateral portion)
gastroduodenal artery (anterolaterally)
where is the neck located?
between the head and body
the neck is situated immediately anterior to the?
the neck lies anterior to the?
Portal splenic confluence
whats an aka for SMV?
portal confluence or main portal vein
what is the largest portion of the pancreas?
the body lies anterior to the?
aorta, SMA, splenic vein
tail extends to the?
hilum of the spleen
the tail is situated between what?
stomach (anteriorly) and left kidney (posteriorly)
the splenic veins runs along what in the tail?
tail may lie on what level in the body?
superior but can be lower or even too
what is an aka for uncinate process
uncinate process is the ___________ projection of the pancreas head?
the unicinate process lies directly posterior to the?
the unicinate process lies directly anterior to the?
is the pancreas retroperitoneal?
yes, but the small part of the head is not
what portion of the pancreas is posterior to the SMV?
what portion is anterior to the SMV?
how is the tail situated in relation to the head of pancreas?
what is the main pancreatic duct?
Duct of Wirsung
what does the duct of wirsung do?
transports and discharges pancreatic juice into duodenum through ampulla of vater to aid in digestive process
what is the pancreatic accessory duct?
duct of Santorini
the duct of santorini enters the duodenum where?
around 2 cm superior to the duct of wirsung
what is the ampulla of vater?
dilation in the second portion of duodenum where common bile duct and pancreatic ducts enter to discharge substances that aid in digestive process
what is the sphincter of oddi?
muscle surrounding the ampulla of vater that controls flow of pancreatic juice from pancreas and bile from the biliary tract into the duodenum
arterial supply of the pancreas included blood from where?
pancreaticduodenal arteries and branches of the splenic artery
anterior and inferior pancreaticduodenal arteries supply a portion of what?
the pancreaticduodenal arteries and pancreatic arcades supply the what?
head of pancreas
what are pancreatic arcades?
vascular connections between the hepatic, splenic, and superior mesenteric arteries
the pancreatic splenic artery supplies what?
the body and tail of pancreas with blood
the pancreatic splenic artery originates from what?
the celiac axis
the pancreatic splenic artery runs along where?
the superior edge of pancreas body and tail and parallel to the splenic vein
what is the total length of pancreas?
what is the AP diameter of the head?
what is the AP diameter of the neck?
what is the AP diameter of the body?
what is the AP diameter of the tail?
the pancreas is a ____________ and __________ gland
digestive (exocrine), hormonal (endocrine)
approximately __ of the gland is exocrine and __ is endocrine
what does exocrine mean?
what does endocrine mean?
released directly in blood stream, no ducts
what does amylase act on in the pancreas?
what does lipase act on in the pancreas?
what does trypsin, chymotrypsin, carboxypeptidase act on in pancreas?
what does nucleases act on in pancreas?
what does sodium bicarbonate act on in pancreas?
beta's hormone is?
alpha's hormone is?
delta's hormone is?
gamma's hormone is?
epsilon's hormone is?
what is beta's action?
what is alpha's action?
glycogen ----> glucose
what is delta's action?
what is gamma's action?
related to blood sugar regulation
what is epsilon's action?
related to blood sugar regulation
what is normal appearance of pancreas?
hyper-echoic compared to liver
smooth wall margins
normal variants of pancreas
ectopic (heteroctopic, aberrant) pancreas
partial duplication of pancreas tail
what is an annular pancreas?
condition in which a ring of pancreatic tissue surrounds the second portion (C loop) of the duodenum
what is an ectopic pancreas?
tissue that has no vascular or structural connection to body of pancreas.
why is an ectopic pancreas difficult to detect with sonography?
it may be as small as 1 cm in size
what is a partial duplication of the pancreas tail?
sonographically, the tail may appear grossly enlarged
uses of pancreatic sonography includes:
-associated distal biliary tree measurements
-identification of pancreatic masses
-identification of epigastric masses
-main pancreatic duct measurements
-adjacent associated biliary masses
what is a normal measurement for the main pancreatic duct?
2mm or less, if its more than 3mm then its an issue
uses of pancreatic sonography include:
-associated biliary obstruction
-diagnosis and follow up eval of acute and chronic pancreatitis
-diagnosis and follow up eval of pancreatic pseudocysts
-endoscopic pancreatic ultrasound for identification of pancreatic lesions on patients whose CT results were inconclusive
associated tests of pancreas
-endoscopic retrograde cholangiopancreaticduodenography (ERCP)
what are the lab test associated with pancreas?
amylase and lipase
the pancreas is shaped like the upside down letter?
which structures are posterior to the pancreas?
IVC, diaphragm, Aorta
which of the following structures enter the duodenum?
common bile duct, accessory pancreatic duct, duct of Wirsung
the body of the pancreas can best be describes as lying anterior to?
the SMA, splenic vein, aorta
tail of the pancreas can best be described as is medial to the?
This set is often in folders with...
Intro to Sono ch 2&3
Sono ch 7
Ch 5 Sono
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