GI anatomy review
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![Page 1: GI anatomy review](https://reader033.fdocuments.us/reader033/viewer/2022052623/559b280b1a28ab7e1c8b459d/html5/thumbnails/1.jpg)
GI ANATOMY REVIEW
Alyssa Jenkins, SMD 2013
Edited by Eric Ness, SMD 2014
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GI:
Greater Omentum
Transverse Colon
Stomach
Gallbladder
Liver Lesser Omentum
Round Ligament of Liver
(Ligamentum Teres)
Diaphragm
Falciform Ligament
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GI:
Ascending Colon
Transverse Colon
Stomach
Descending Colon
Small Intestine
Sigmoid Colon
Cecum
L Colic Flexure
R Colic Flexure
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GI:
Sigmoid ColonCecum
Ascending ColonSmall Intestine
Stomach
Hepatic Portal Vein
Gallbladder
Common Bile DuctCystic Duct
Common Hepatic Duct
Gastroduodenal Artery
Appendix
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GI:
Cecum
Ascending Colon Abdominal Aorta
Duodenum
Urinary Bladder with
Peritoneum
Sigmoid Colon
Taeniae Coli
Descending
Colon
Inferior Mesenteric
Vein with Branches
Left Colic Artery
Head of Pancreas
Neck of Pancreas
Body of Pancreas
Stomach
Tail of Pancreas
Splenic Vein
Splenic Artery
Spleen
Ileum
Sigmoid Artery
Superior Rectal Artery
Uncinate Process of
Pancreas
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GI:
Hepatic Portal Vein
Liver
Gallbladder
Bile Duct
Major Duodenal
Papilla
Common Hepatic DuctRight Hepatic Duct
Spleen
Pancreas
Pancreatic Duct
Cystic Duct
Duodenum
Abdominal Aorta
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GI VASCULATURE:
L Gastro-Omental Artery
(Branch of Splenic Artery)
R Gastro-Omental Artery
(Branch of Gastroduodenal Artery)Transverse Colon
Greater Omentum
Lesser Omentum
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GI VASCULATURE:
Liver
Gallbladder
Duodenum
Ascending Colon
Ileum
Ileocecal Junction
Cecum
Small Intestine
Pancreas
R Colic Artery
Ileocolic Artery
Intestinal Arteries
Middle Colic Artery
Superior Mesenteric Artery
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GI VASCULATURE:
Gallbladder
Duodenum
Common Bile Duct
Abdominal Aorta
Superior Rectal
Artery Sigmoid Colon
Inferior Mesenteric
Artery
Portal Vein
Stomach (transected)
Spleen
Sigmoid Arteries
Descending Colon
Inferior Mesenteric Vein
L Colic Artery
Splenic Vein
Celiac Trunk
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GI VASCULATURE:
Mesentery
Stomach
Transverse Colon
L Colic Artery
Descending Colon
Liver
Gallbladder
Proper Hepatic Artery
Ascending Colon
Small Intestine
Middle Colic Artery
Duodenum
(Superior Segment)
L Gastric ArteryCommon Hepatic Artery
R Gastroduodenal Artery
Pylorus
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GI VASCULATURE:
Splenic Artery
Pancreas
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GI VASCULATURE:
Spleen
Left Colic Artery
L Gastro-omental
Artery
Duodenum
Inferior Mesenteric Vein
Liver
Descending Colon
L Hepatic Duct
Splenic Artery
L Gastric Artery
Splenic Vein
R Hepatic Duct
Common Hepatic Duct
Gallbladder
Cystic Duct
Common Bile Duct
Gastroduodenal Artery
R/L Hepatic Arteries
Hepatic Portal Vein Proper Hepatic
Artery
Celiac Trunk
Superior Mesenteric Vein
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STOMACH:
Bile Duct
EsophagusFundus of Stomach
Pancreas
Pyloric Part of
Stomach
Horizontal Part
of Duodenum
Greater Curvature
Lesser Curvature
Stomach
Body of Stomach
Superior Part of
Duodenum
Descending Part of
Duodenum
Cardia of Stomach
Antrum Part of
Stomach
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STOMACH:Esophagus
Duodenum
Major Duodenal
Papilla
Pancreatic Duct
Body of Stomach
Bile Duct
Pyloric Sphincter
Gastric Folds (Rugae)
Fundus of StomachLower Esophageal
Sphincter
Cardia of Stomach
Pyloric Orifice
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PELVIS FEMALE
Rectum
External Anal Sphincter
Anal Canal
Recto-uterine Pouch
Urinary Bladder
Uterus
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PELVIS MALE
Rectum
External Anal Sphincter
Internal Anal Sphincter
Recto-vesical Pouch
Urinary Bladder
Prostate
Anal Canal
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VH DISSECTOR – GI 1690 – ABDOMINAL WALL
Aponeurosis External Oblique
(Anteror Rectus Sheath)
Aponeurosis Internal Oblique
(Anterior Lamina Anterior
Rectus Sheath; Posterior
Lamina Posterior Rectus
Sheath)Aponeurosis Transversalis
Abdominis (Posterior
Rectus Sheath)
Rectus Abdominus
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Stomach
Hepatic Veins
Esophagus
Left Lobe LiverRight Lobe Liver
Cross Section 1497
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Stomach
Transverse Colon
Descending Colon
Splenic Flexure
IVC
Stomach
Cross Section 1535
Right branch
Hepatic Portal Vein
Left branch
Hepatic Portal Vein
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Cross Section 1585
Transverse Colon
Ascending Colon
Transverse Colon
Pancreas
Superior Mesenteric Vein
Duodenum
Celiac Trunk
IVC
Descending Colon
Hepatic Flexure
![Page 21: GI anatomy review](https://reader033.fdocuments.us/reader033/viewer/2022052623/559b280b1a28ab7e1c8b459d/html5/thumbnails/21.jpg)
Cross Section 1602
Bile Duct
Duodenum
Transverse Colon
IVC
SMA
SMVJejunum
Descending
Colon
Abdominal
Aorta
Ascending
Colon
Transverse Colon
Psoas Major
Quadratus
Lumborum
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Cross Section 1614
Jejunum
Descending
Colon
Abdominal Aorta
(Renal Arteries
Branching)
Transverse
ColonTransverse
Colon
Ascending
ColonSMV
SMA
IVC (Renal
Veins
Branching)
Psoas Major
Quadratus
Lumborum
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Cross Section 1639
SMV
IVC
Transverse
Colon
Duodenum
Ascending
Colon
Ileum
Jejunum
Abdominal
Aorta
Psoas Major
Quadratus
Lumborum
![Page 24: GI anatomy review](https://reader033.fdocuments.us/reader033/viewer/2022052623/559b280b1a28ab7e1c8b459d/html5/thumbnails/24.jpg)
Cross Section 1660
Ascending
Colon
Transverse
Colon
Aorta
Duodenum
Ileum
Jejunum
Descending Colon
Left kidney
Ileum
Start of Ileum
Psoas Major
Quadratus
Lumborum
SMV
Ileocolic Artery
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Cross Section 1681
Psoas Major
Quadratus
Lumborum
Ascending
Colon
Ileum
Proximal
Ileum
Descending
Colon
Distal Jejunum
![Page 26: GI anatomy review](https://reader033.fdocuments.us/reader033/viewer/2022052623/559b280b1a28ab7e1c8b459d/html5/thumbnails/26.jpg)
Cross Section 1703
Ileum
Descending Colon
Ascending Colon
IVC
Abdominal Aorta
Psoas Major
Quadratus
Lumborum
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Cross Section 1741
Ileum
Descending Colon
Ascending
Colon
Small Intestine
(Terminal Ileum)
Common Iliac
Artery and Vein Psoas Major
Iliacus
Ileum
Cecum
![Page 28: GI anatomy review](https://reader033.fdocuments.us/reader033/viewer/2022052623/559b280b1a28ab7e1c8b459d/html5/thumbnails/28.jpg)
Cross Section 1823
Sigmoid Colon
Ileum
Sigmoid Colon
Iliacus
Internal Iliac Veins
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Cross Section 1853
Sigmoid Colon
Rectum
Iliacus
Rectus Abdominis
![Page 30: GI anatomy review](https://reader033.fdocuments.us/reader033/viewer/2022052623/559b280b1a28ab7e1c8b459d/html5/thumbnails/30.jpg)
Cross Section 1906
Levator Ani (Puborectalis)
Rectum
Prostate
![Page 31: GI anatomy review](https://reader033.fdocuments.us/reader033/viewer/2022052623/559b280b1a28ab7e1c8b459d/html5/thumbnails/31.jpg)
Cross Section 1943
External Anal Sphincter
Internal Anal Sphincter
Anus
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Cross Section 3701 – Female
External Anal Sphincter
RectumInternal Anal Sphincter
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PRACTICE QUESTIONS
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1. NAME THAT STRUCTURE:
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CELIAC TRUNK
–CAN YOU NAME ITS BRANCHES?
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2. WHAT IS THE NAME OF THIS AREA?
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HEPATIC FLEXURE
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3. NAME THAT STRUCTURE?
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RECTUM
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4. NAME THAT STRUCTURE…
![Page 49: GI anatomy review](https://reader033.fdocuments.us/reader033/viewer/2022052623/559b280b1a28ab7e1c8b459d/html5/thumbnails/49.jpg)
Ligamentum Teres
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OF WHAT STRUCTURE IS IT A REMNANT?
Ligamentum Teres
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FETAL UMBILICAL VEIN
Ligamentum Teres
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5. NAME THAT STRUCTURE…
Proper Hepatic Artery
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NAME ITS SOURCE:
Common Hepatic Artery
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NAME ITS BRANCHES:
-Right Gastric a.
-Right hepatic a. (-> cystic a.)
-Left hepatic a.
(-Supraduodenal a.)
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6. NAME THAT STRUCTURE…
Small Intestine
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WHAT ARE ITS THREE SECTIONS?
-Duodenum
-Jejunum
-Ileum
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8. NAME THAT STRUCTURE…
Left Colic Artery
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IF YOU FOLLOW THAT VESSEL DISTALLY, WHAT
VESSEL COMES NEXT? WHAT OTHER VESSEL
FORMS THAT VESSEL?
-Marginal Artery
-Middle Colic Artery via the Superior Mesenteric Artery
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9. FIND THE MAJOR DUODENAL PAPILLA
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WHAT IS THE MAJOR DUODENAL PAPILLA’S
DEVELOPMENTAL SIGNIFICANCE?
-Divides foregut from midgut
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10. WHICH IS CORRECT?
A. Few arcades, short vasa recta many arcades, long vasa recta
B. Few arcades, long vasa recta many arcades, short vasa recta
C. Many arcades, long vasa recta few arcades, short vasa recta
D. Many arcades, short vasa recta few arcades, long vasa recta
Jejunum Ileum
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11. NAME THE PARTS OF THE STOMACH…
Fundus
Pylorus
Greater Curvature
Lesser Curvature
Body
Cardia
Antrum
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12. NAME THE PARTS OF THE DUODENUM…
1. Superior
2. Descending
3. Horizontal
4. Ascending
Which of these parts are intraperitoneal? Retroperitoneal?
-First part of superior segment – intraperitoneal
-Rest of superior segment, all of descending, horizontal, and ascending
segments - retroperitoneal
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GOOD LUCK!!!