the foregut Flashcards
how is the abdomen divided into?
foregut
midgut
hindgut
where does the foregut range from?
esophagus to duodenum
what is the particularity of each gut?
Each gut is separated and receive single blood supply from a single artery which further branches off
at what level does the aorta pass the diaphragm
T12
what branches does the abdominal aorta give off?
inferior phrenic a. celiac trunk superior messenteric a inferior messenteric a common iliac a renal a gonadal a
what A. supplies blood supply to the inferior surface of the diaphragm
inferior phrenic A
at what level is the celiac trunk found
T12/L1
where does the common iliac split?
L4
what is the esophagus a continuation of?
the pharynx
what is the esophagus divided into?
3 parts
cervical
thoracic
abdominal
what type of movement is allowed in the esophagus, what muscles accomplish it?
inner circular muscles
outer longitudinal muscles
what is the goal of the sphincters at each end of the esophagus?
to keep each the acid from stomach to mix with bases of the SI
how is the UES controlled?
Voluntary control
how is the LES controlled?
involuntary control
at what level does the esophagus pass the diaphragm?
T10
where is the stomach located in the abdomen? precisely what regions?
upper left quadrant
in the epigastric, umbilical and left hypochondriac regions
where is the cardia of the stomach found?
it the portion of the stomach that is closes to the heart,
the cardia orifice opens at the LES
in what part of the stomach does gas build up?
fundus
where is the fundus located?
upper portion of the stomach
what happens to the body of the stomach as we go from the superior to inferior portion of the stomach?`
it narrows
where does chyme get secreted out of the stomach from?
pyloric canal
what Controls movement of chyme from stomach to SI and is a thickened region of circular muscles?
pyloric sphincter
what is a rugae?
Folds of the inner stomach wall that will flatten as the stomach distends to increase in size
what are the curvatures of the stomach?
lesser and greater curvature
where is the duodenum located in the abdomen?
ranges from upper left to upper right quadrants
how is the duodenum divided into?
4 parts D1: Superior D2: descending D3: inferior D4: ascending
what parts of the abdomen are intraperitoneal?
D1 and a part of D4 (distal)
what parts of the abdomen are retroperitoneal?
D2-D3-D4(proximal)
what does the SI divide into?
o Duodenum
o Jejum
o ileum
what type of organ is the pancreas? exception?
Retroperitoneal organ (except for the tail)
what is the function of the pancreas?
Responsible for producing and secreting insulin and digestive enzymes
how can the pancreas be viewed?
Can be viewed by entering the lesser sac deep to the stomach
where is the head of the pancreas located?
in the concavity of the duodenum
where is the uncinate process of the pancreas found?
Near the head of the pancreas on the inferior surface
how does the body and tail of the pancreas travel in the abdomen? at what levels?
travel to the left, deep to the stomach, anterior to left kidney
L1-L4
is the spleen a vital organ?
no