Exam 3: Organs Flashcards
Stomach lies in which regions of abdomen
Left hypochonrdium
Epigastric
Umbilical
Stomach function
Digestive NOT absorptive
Stores and mixes food
Parts of stomach
Cardia
Fundus
Body
Pyloric part
Cardia of stomach
Where esophagus joins stomach
Fundus of stomach
Above cardia
Body of stomach
Between fundus and pyloric part
Pyloric part
Most distal portion, adjacent to duodenum
Greater curvature is on the
Left side
Lesser curvature is on the
Right side
Cardial notch
Between esophagus and fundus
Angular incisure
Between body and pyloric part
Cardial orifice
Between esophagus and stomach
Pyloric orifice
Between stomach and duodenum
3 subdivisions of pyloric part
Pyloric antrum
Pyloric canal
Pylorus
Pylorus contains
Pyloric orifice
Pyloric sphincter
Pyloric sphincter
Circular muscle layer that surrounds pyloric orifice
Gastric folds
Longitudinal folds of mucous membrane within stomach
Stomach location in abdomen
Anterior to omental bursa and pancreas
Posterior to diaphragm, L lobe liver, anterior ab wall
Blood supply to stomach
Branches of celiac trunk
Innervation of stomach
From celiac plexus
Sympathetic innervation to stomach
Greater splanchnic nerves (T5-9)
Parasympathetic innervation of stomach
Vagus nerve
Celiac trunk is the first ____
Unpaired branch from abdominal aorta
Celiac trunk arises
Below aortic hiatus of diaphragm
3 main branches off celiac trunk
Left gastric artery
Splenic artery
Common hepatic artery
Left gastric artery is the _____ branch
Smallest
Left gastric artery gives off 2 branch bundles
Esophageal
Gastric
Splenic artery is the _____ branch
Largest
Splenic artery runs
Posterior to stomach, superior border of pancreas, terminates in spleen
Left gastric artery runs along
Lesser curvature within lesser omentum
Branches of splenic artery
Pancreatic
Short gastric
Left gastro-omental artery
Short gastric arteries supply
Fundus of stomach
Left gastro-omental artery runs along
Greater curvature within greater omentum
Common hepatic artery runs along
Superior border of pancreas
Common hepatic artery becomes _____ after giving off gastroduodenal artery
Hepatic artery proper
Gastroduodenal artery runs
Behind 1st part of duodenum
3 branches of gastroduodenal artery
Supraduodenal
Right gastro-omental
Superior pancreaticoduodenal
Superior pancreaticoduodenal artery passes between
Duodenum and head of pancreas
Hepatic artery proper branches
Right gastric
Right hepatic
Left hepatic
Right hepatic artery branch
Cystic artery
Cystic artery supplies
Gall bladder
Small intestine is ____ long
About 7 m
Duodenum is __shaped and surrounds _____
C-shaped; head of pancreas
Duodenum is the _____ and _____ part of SI
Shortest and widest
Parts of duodenum
Superior
Descending
Inferior/horizontal
Ascending
Superior part of duodenum runs
To the right
Beginning of superior part is called the
Duodenal cap (ampulla)
Descending part contains
Junction of foregut and midgut where bile and pancreatic duct empty
Inferior/horizontal part is the _____ part and runs ____
Longest part; to the left
Ascending part ascends to the _______ and terminates at
Left of aorta; duodenojejunal flexure
Suspensory muscle of duodenum
Fibromuscular band
Extends from diaphragm to duodenojejunal flexure
Duodenum is entirely _____ except fo
Retroperitoneal; duodenal cap
Superior mesenteric artery and vein pass
Anterior to 3rd part of duodenum
Blood supply to duodenum
Superior pancreaticoduodenal
Supraduodenal
Inferior pancreaticoduodenal
Inferior pancreaticoduodenal artery supplies
3rd and 4th parts of duodenum
Innervation of duodenum
Celiac and superior mesenteric plexuses
Jejunum makes up _______ of small intestine
Proximal 2/5
Jejunum begins at
Duodenojejunal flexure
Jejunum lies mostly in
Left upper quadrant
Ileum makes up _______of small intestine
Distal 3/5
Ileum occupies the
Right lower quadrant
Ileum joins _____ at the _______
Cecum; ileocecal junction
Jejunum and ileum are suspended from _____ by _____
Posterior abdominal wall by mesentery
Mesentery carries
Blood vessels, nerve, and lymphatics
Jejunum is the segment most involved in
Nutrient absorption
Ileum absorbs
Fat soluble vitamins
Vitamin B12
Bile salts
Vasa recta
Straight terminal branches that supply small intestine
Plicae circulares
Circular folds within SI
Peyer’s patches
Lymphoid tissue within walls of small intestine
Plicae circulares function
Increase surface area for absorption
Slows passage of material
Peyer’s patches function
Immune defense of GI tract
Blood supply to jejunum and ileum
Branches of superior mesenteric artery
Innervation of jejunum and ileum
From superior mesenteric plexus
Large intestine extends from
Ileocecal junction to anus
LI is about ____ long
1.5m
Primary function of LI
Convert liquid contents into semisolid feces — absorb water
Parts of LI
Cecum
Appendix
Colon
Parts of colon
Ascending
Transverse
Descending
Sigmoid
Cecum
Blind pouch below ileocecal junction
Cecum lies within
Right iliac fossa
Ileal fold
2 flaps that surround ileal orifice
Ileal fold flaps fuse laterally to form
Frenula
Function of ileal fold
Prevents backflow of feces into SI
Appendix
Narrow muscular tube that contains lymphoid tissue
Most common position of appendix
Retrocecal
Second most common position of appendix
Pelvic
Most common intra-abdominal inflammatory condition
Appendicitis
Ascending colon runs from
Ileocecal junction to R colic flexure
Transverse colon runs from
R colic flexure to L colic flexure
Descending colon runs from
L colic flexure to pelvic brim
Sigmoid colon runs from
Pelvic brim to front of sacrum
Ascending and descending colon are
Retroperitoneal
Transverse and sigmoid colon lie within
Peritoneal cavity
Transverse and sigmoid colon are attached to posterior body wall by
Transverse and sigmoid mesocolon
Cecum and appendix are
Intraperitoneal
Taeniae coli
3 longitudinal bands of muscle prominent in cecum and ascending
Haustra of colon
Outpouchings of colon
Omental appendices
Small masses of fat that extend from colon
Blood supply to SI and LI
Superior mesenteric artery
Inferior mesenteric artery
Marginal artery
Vasa recta
Superior mesenteric artery arises from
Abdominal aorta
Below celiac trunk
Superior mesenteric artery branches supply
Intestine — from 2nd duodenum through right 2/3 of transverse colon
Branches of superior mesenteric artery
Inferior pancreaticoduodenal Jejunal and ileal Ileocolic Right colic Middle colic
Inferior pancreaticoduodenal supplies
Pancreas and distal part of duodenum
Jejunal and ileal arteries
12-15 arteries that supply jejunum and ileum
Ileocolic artery supplies
Ascending colon, cecum and appendix
Right colic artery supplies
Ascending colon
Middle colic artery supplies
Transverse colon
Inferior mesenteric artery arises from
Lower part of abdominal aorta
Inferior mesenteric artery branches supply
LI from left 1/3 transverse to upper part of anal canal
Branches of inferior mesenteric artery
Left colic artery
Sigmoid arteries
Superior rectal artery
Left colic artery supplies
Descending colon
Sigmoid arteries supply
Sigmoid colon
Superior rectal artery supplies
Rectum and upper part of anal canal
Terminal branch of inferior mesenteric artery
Superior rectal artery
Marginal artery
Anastomotic channel
Runs from cecum to sigmoid
Branches of __________ empty into marginal artery
Superior and inferior mesenteric arteries
Vasa recta are straight terminal branches from
Marginal artery to the large (and small) intestine
Cecum through right 2/3 of transverse innervation
Superior mesenteric plexus
Left 1/3 of transverse to upper part of anal canal innervation
Inferior mesenteric plexus and hypogastric plexus