S26 Anatomy 2-3

Viscera

Which un-paired artery off the abdominal aorta supplies the stomach?

Celiac trunk

Left Gastric Artery

Parietal Peritoneum

Splenic Artery

Common Hepatic Artery

black - celiac trunk
yellow - left gastric a.
red - splenic a.
white - common hepatic a
gold - duodenum

not on structure list
red starbust - spleen
pancreas uncinate/head/neck/body - orange, lt blue, lt green, dark green

What plane travels through the pylorus of the stomach and at what vertebral level?

Transpyloric plane at L1

List the structures located at the transpyloric plane.

Pyloric orifice, fundus of gallbladder, hila of kidneys, origin of SMA, hepatic portal v., colic and duodenojejunal flexures, 1st part of duodenum, body of pancreas, spleen, cisterna chyli, and conus medullaris

pink        cardiac region
red          fundus
blue        greater curvature
orange    lesser curvature
black       pylorus   (aka pyloric antrum/canal)
yellow      parietal peritoneum

Falciform Ligament

Which omentum connects to the greater curvature of the stomach?

Greater omentum

(omenta are double-layered, fatty peritoneum folds connecting the stomach to adjacent organs)

Which omentum connects to the lesser curvature of the stomach?

Lesser omentum

At what costal cartilage and vertebral level does the pyloric part of the stomach lie?

9th costal cartilage and L1 vertebra (left of the midline)

On which side of the abdomen is the pylorus usually located?

Right side

Between what vertebral levels is the pylorus usually located?

Can vary from L2-L4

What specific part of the stomach is continuous with the superior (1st part) of the duodenum?

Pylorus

red             duodenum
yellow        jejunum
purple       ascending colon
lt green       transverse colon
pink            cecum
light blue    sigmoid colon


not pictured: ileum, spleen, appendix, descending colon

What structures open into the second part of the duodenum?

Biliary and main pancreatic ducts

jejunum (will be pinned in upper L of abdomen)

ileum (will be pinned in lower R quadrant)

Which vessel courses anterior to the third part of the duodenum?

Superior mesenteric artery (SMA)

From which two "guts" is the large intestine derived?

Midgut and hindgut

Which artery supplies the ascending colon?

Right colic artery (branch of the SMA)

Which artery supplies the descending colon?

Left colic artery (branch of the IMA)

In which abdominal quadrant does the cecum sit?

Lower right quadrant

Cecum

Appendix

Splenic / Left Colic Flexure

Hepatic / Right Colic Flexure

Descending Colon

Sigmoid Colon

At what vertebral level is the celiac trunk found and which gut does it supply?

T12/L1; it supplies the Foregut

What structures are supplied by the left gastric artery?

Abdominal esophagus and the lesser curvature of the stomach

What structures are supplied by the splenic artery?

Pancreas, part of the stomach, and the spleen

What structures are supplied by the common hepatic artery?

Liver, gallbladder, head and uncinate process of pancreas, and the right part of the greater curvature of the stomach

orange - superior mesenteric a.
yellow - middle colic a.
white - intestinal a.
blue - ileocolic a.
purple - right colic a.

(not picture: intestinal aa)

At what vertebral level is the SMA located and which gut does it supply?

L1; it supplies the Midgut

The superior mesenteric artery crosses anterior to which organ?

3rd part of the duodenum

What structures do the intestinal branches of the SMA supply?

Jejunum and ileum

What structures does the ileocolic artery supply?

Terminal ileum, cecum, and appendix

What structure does the right colic artery supply?

Ascending Colon

What part of the transverse colon is supplied by the middle colic artery?

Proximal 2/3 of the transverse colon

white-     inferior mesenteric a.
lt blue -   left colic a.
yellow -   sigmoidal aa.
dk blue - superior rectal a.

At what vertebral level is the IMA located and which gut does it supply?

L3; it supplies the Hindgut

Which parts of the colon are supplied by the left colic artery?

Lateral 1/3 of the transverse colon and the descending colon

What does the Sigmoidal artery supply?

Sigmoid Colon

What does the superior rectal artery supply?

Rectum and proximal anal canal