S2_L3: Gastrointestinal Tract and Organs Flashcards
Determine the corresponding landmark of the following structures
- Tubercle of Iliac crest (Intertubercular plane)
- Hilum of kidneys
- Transpyloric plane
- Bifurcation of abdominal aorta
A. L1
B. L4
C. L5
D. Tip of 9th costal cartilage, L1
- C
- A
- D
- B
Determine the corresponding classification of the following structures
- Urinary bladder
- Cecum
- Abdominal Aorta
- Stomach
- Spleen
- Suprarenal/Adrenal Glands
A. Intraperitoneal
B. Retroperitoneal
- B
- A
- B
- A
- A
- B
Determine the corresponding landmark of the following structures
- Descending colon
- Sigmoid colon
- Appendix
- Inferior vena cava
- Lower 3rd of rectum
A. Intraperitoneal
B. Retroperitoneal
- B
- A
- A
- B
- A
Determine the corresponding landmark of the following structures
- Transverse colon
- Fundus of the gallbladder
- Part of esophagus
- 1st Part of Duodenum
- Kidney
- Jejunum
A. Intraperitoneal
B. Retroperitoneal
- A
- A
- B
- A
- B
- A
Determine the corresponding landmark of the following structures
- 2nd, 3rd, & 4th Parts of Duodenum
- Tail of pancreas
- Ureters
- Head of pancreas
- Upper two-thirds of rectum
- Ileum
A. Intraperitoneal
B. Retroperitoneal
- B
- A
- B
- B
- B
- A
Determine the corresponding blood supply of the divisions of the GI tract (embryology)
- Foregut
- Midgut
- Hindgut
A. Superior mesenteric artery
B. Inferior mesenteric artery
C. Celiac artery
- C
- A
- B
Determine the corresponding supply of the branches of the superior mesenteric artery
- Ascending Colon
- Lower part of ileum
- Transverse Colon
- Jejunum and Ileum
- Pancreas and Duodenum
A. Middle colic artery
B. Right colic artery
C. Jejunal and ileal arteries
D. Inferior Pancreaticoduodenal artery
E. Ileocolic artery (Anterior cecal, posterior cecal, ileal, and colic)
- B
- E
- A
- C
- D
Determine the corresponding descriptions of the jejunum and ileum
- Larger and more numerous plica circularis closely set
- Lies in lower part of cavity
- Peyer’s patches (lymphoid tissue) present in mucus membrane
- Wider, has thicker wall and redder
- Fat deposited throughout from the root to the intestinal wall
- Mesenteric vessels form one or two arcades with long infrequent branching
A. Jejunum
B. Ileum
- A
- B
- B
- A
- B
- A
Determine the corresponding descriptions of the jejunum and ileum
- Narrower and thinner wall and pale
- Lies coiled in upper part of cavity below left side of transverse mesocolon
- Mesenteric vessels have short numerous terminal vessels arising from three or more arcades
- Smaller and widely spaced plica circularis
- Fat deposits are near root and near end of mesentery, and less near the wall
- Mesentery attached above and left of aorta
A. Jejunum
B. Ileum
- B
- A
- B
- B
- A
- A
Determine the corresponding landmark of the following structures
- Duodenojejunal Junction
- Pancreatic neck
- Iliac crest (Intercristal plane)
- Pylorus of the stomach
A. L1
B. L4
C. L5
D. Tip of 9th costal cartilage, L1
- A
- A
- B
- A
Determine the corresponding supply of the branches of the inferior mesenteric artery
- Rectum and upper half of anal canal
- Distal third of transverse colon, left colic flexure, and upper part of descending colon
- Descending and sigmoid colon
A. Sigmoid artery
B. Superior rectal artery
C. Left colic artery
- B
- C
- A
TRUE OR FALSE: Patients with gastroesophageal reflux disease (GERD) are advised to lie on the left side so that the stomach contents would not go up into the esophagus.
True
Left side: where the stomach is
A hormone from the stomach that causes relaxation of muscle tone
Gastrin
Circular muscle of lower end of ileum serves as a sphincter into colon. Composed of horizontal folds of mucous membrane that projects around the orifice of the ileum.
Ileocecal valve
The defense mechanism against bacteria of typhoid/enteric fever that can only be found on the lowest ileum
Peyer’s patches
What controls the closure of the Gastroesophageal Sphincter?
Vagus nerve and gastrin hormone
What causes a reduced response of the Gastroesophageal Sphincter?
Secretin, cholecystokinin, and glucagon
Paste-like material that will be transported out of the stomach via pylorus to the small intestine for digestion and absorption
Chyme
Determine the corresponding blood supply of the stomach
- Supplies fundus of stomach
- Supplies lower part of greater curvature
- Supplies lower third of esophagus and upper right stomach
- Supplies the stomach along upper part of greater curvature
A. Left gastroepiploic artery (from splenic artery)
B. Right gastroepiploic artery (from hepatic artery)
C. Short gastric artery (from splenic artery)
D. Left gastric artery (from celiac artery)
- C
- B
- D
- A
Determine the corresponding descriptions of the stomach muscle fibers
- Innermost muscle coat; loops over the fundus and pass down the anterior and posterior wall
- Encircle the body of stomach, some are found in the region of fundus
- Most concentrated along curves
- Generally found plenty and thick at pylorus
- Most superficial
A. Oblique fibers
B. Circular fibers
C. Longitudinal fibers
- A
- B
- C
- B
- C
The longest part of the alimentary canal from the pylorus to ileocecal junction
Small intestine
Lines the plicae circulares and increase surface area, to allow for better absorption and digestion. It contains a network of capillaries which surround a specialized lymphatic vessel known as the lacteal.
Villi (s. villus)
Lining of the small intestine is made up of numerous circular folds / indentations / projections that increase surface area, making absorption and digestion more effective.
Plicae circulares
The large intestine extends from the ileum to the ___
Anus