Gastro-Intestinal Anatomy (part I) Flashcards
The GI tract is derived from what germ layer
the endoderm
what are the three embryological parts of the GI tract
Foregut, midgut and hindgut
the fore gut is supplied by what
celiac trunk
what does the foregut give rise too
esophagus, stomach, proximal half of the duodenum, the liver, gallbladder, and pancreas
what is the midgut supplied by
superior mesenteric artery
what does the midgut give rise too
distal half of the duodenum, small intestine, proximal half of large intestine up to the proximal two thirds of transverse colon
what is the hindgut supplied by
the inferior mesenteric artery
what does the hindgut give rise too
rest of the large intestine from the distal third of the transverse colon to the proximal half of the anal canal
What is Meckel’s diverticulum
it is an uncommon congenital anomaly
what percentage of the population does meckels diverticulum occur in
2%
how long is Meckels diverticulum and where is it located
it is 2 inches long and is located 2 feet proximal to the ileocecal junction
what are the two types of ectoptic tissues that meckels diverticulum may contain
gastric and pancreatic tissue
how much more often is meckels diverticulum found in males than females
two times more common in males
The GI tract can be divided in how many quadrants? what are they
4 quadrants - right and left upper and right and left lower quadrants
how many regions are located in the abdominal region
9 regions associated with organs
what are the 9 regions of the abdominal area
epigastric, right and left hypochondrium, umbilical, right and left flanks, right iliac fossa, left iliac fossa and hypogastric (suprapubic)
what organs are in the epigastric region of the abs
stomach duodenum and pancreas
what organs are in the right hypochondrium region
liver and gallbladder
what organs are in the left hypochondrium region
spleen
what is located in the umbilical region of the abs
small intestine
what organs are located in the right and left flanks of the abs
right and left kidneys
What organs are located in the right iliac fossa of the abs
appendix, right ovary and right uterine tube and cecum
what organs are located in the left iliac fossa of the abs
left ovary, left uterine tube and sigmoid colon
what organs are located in the hypogastric (suprapubic) region
bladder and uterus
Where is the dermatome T7 level
xiphoid level
where is the dermatome T10 level
umbilical level
where is the dermatome level of L1
inguinal region