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Transcript
Cross Sectional Anatomy
Chris Kowtko, MSRS, R.T. (R)(M)
ABDOMEN

Musculo-Skeletal
System






Psoas muscle
Crura of Diaphragm
Vertebra
Ilium
Pubic
Ribs
ABDOMEN

Digestive system





Esophagus
Stomach
Small intestine
Large intestine
Accessory organs
• Liver & gall bladder
• Bile ducts
• Pancreas

Esophagus






Anterior to vertebral
bodies; aorta
Posterior & medial to
stomach
Stomach
Fundus-superior to EG
junction; very
posterior
Body-more anterior
than fundus
Pylorusretroperitoneal &
medial










Small Intestine
Duodenumretroperitoneal
Jejunum-anterior
midabdomen
Ileum-anterior in pelvis
Large intestine
Cecum-retroperitoneal
Ascending colonretroperitoneal
Hepatic flexure-posterior
Transverse colon-most
anterior
Splenic flexure-most
superior



Descending colonretroperitoneal
Sigmoid colonanterior
Rectumretroperitoneal
Accessory Organs







Liver
Right lobe
Left lobe
Quadrate lobe
Caudate lobe
Falciform ligament
Ligamentum
venosum


Gall bladder
Pancreas



Head
Tail
Body
Lymphatic System

Spleen
LUQ
 Posterior to
stomach

Endocrine System

Adrenal Glands


Retroperitoneal
Superior poles of
kidneys
Urinary System
Kidneys
 Ureters
 Urinary Bladder
 Urethra

Kidneys
Retroperitoneal
Cortex-doughnut
Rt-post. to liver
Lt-post. to stomach,
pancreas, spleen






Ureters
Retroperitoneal
Ant. to IIA & IIV;
Post. to EIA & EIV
Urinary Bladder
Post. to symphysis
Urethra
Vascular System



Arterial Phase
Venous Phase
Hepatic-Portal
system



Veins larger in
diameter
Upper abd-Veins
anterior to arteries
Lower abd/Pelvisarteries anterior to
veins
ABDOMEN

Abdominal
Aorta






Fairly midline
Celiac Trunk
Branches:
Left Gastric
Splenic artery
Hepatic artery

Superior
Mesenteric
Artery


Just below Celiac
Same level as Lt
renal vein
entering IVC

Renal Arteries



Inferior to SMA
Rt-longer
Lt-superior to Rt

Common Iliac
Arteries



Bifurcation of
Aorta
Level of L4
Superior to
formation of
IVC

Internal iliac
arteries



Posterior to
external
External iliac
arteries
IIA posterior to
EIA
ABDOMEN

Venous Phase






Inferior vena cava
Renal v.
Common iliac v.
Internal iliac v.
External iliac v.
Hepatic-Portal System





Hepatic v.
Portal v.
Splenic v.
Superior mesentaric v.
Inferior mesentaric v.

Internal &
External Iliac
veins

Common Iliac
veins

Inferior Vena
Cava



Ascends on Rt
side of Aorta
Largest vein
Retroperitoneal

Renal veins


Lateral aspects of
IVC
Lt-longer;
Anterior to aorta

Hepatic veins



Drain into IVC
Superior to Portal
vein
Most superior of
liver vessels
Hepatic Portal System





Porta Hepatis
Portal vein:
IMV
SMV
Splenic vein
CHEST

Cardiovascular
System


Heart
Great vessels
•
•
•
•
•

Aorta
Superior vena cava
Inferior vena cava
Pulmonary artery
Pulmonary vein
Respiratory System



Trachea
Primary bronchii
R & L lung

Respiratory
System



Trachea
Primary bronchii
R & L lung

Heart

4 chambers
•
•
•
•
Right atrium
Right ventricle
Left atrium
Left ventricle

Right Atrium


Right Ventricle


most anterior
Left Atrium


most superior
most posterior
Left ventricle

most inferior

Arterial Phase

Aortic arch
• Brachiocephalic a.
• R Common
carotid a.
• R Subclavian a.
• L Common carotid
a.
• L Subclavian a.



Aortic Arch
Ascending Aorta
Descending Aorta

Venous Phase

Superior vena cava
•R&L
Brachiocephalic v.

Superior Vena
Cava

Pulmonary Phase

Pulmonary
trunk/artery
• R & L Pulmonary
Arteries

Pulmonary veins


2 from Right
2 from Left