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Vascular system Vocab.
Diagnostic Medical Sonography
52
Medical
Undergraduate 1
04/27/2011

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Term
Abdominal aortic aneurysm
Definition
permanent localized dilation of an artery, with an increase in diameter of 1.5 times its normal diameter
Term
anastomosis
Definition

a communication between two blood vessels without any intervening capillary

 network

Term
aorta
Definition
largest arterial structure in the body; arises from the left ventricle to supply blood to the head, upper and lower extremities, and abdominopelvic cavity
Term
ateries
Definition
vascular structures that carry blood away from the heart
Term
arteriosclerosis
Definition
a disease of the arterial vessels marked by thickening, hardening, and loss of elasticity in the arterial walls
Term
arteriocenous fistula
Definition

communication between an artery

 and vein

Term
atherosclerosis
Definition
conditon in which the aortic wall becomes irregular from plaque formation
Term
Budd-chiari syndrome
Definition
thrombosis of the hepatic veins
Term
capillaries
Definition
minute vessels that connect the arterial and venous systems
Term

carvenous transformation of

the portal vein

Definition
periportal collateral channels in patients with chronic portal vein obstruction
Term
common hepatic artery
Definition

arises form the celiac trunk to

supply the liver

Term
common iliac arteries
Definition
the abdominal aorta bifurcates at the level of the umbilicus into common iliac arteries to supply blood to the lower extremities
Term
cystic medial necrosis
Definition
weakening of the arterial wall
Term
dissecting aneurysm
Definition
tear in the intima and/or media of the abdominal aorta
Term
Doppler sample volume
Definition

the sonographer selects the exact site to record doppler signals and sets the sample volume

at this site

Term
fusiform aneurysm
Definition
circumferential enlargement of a vessel with tapering at both ends
Term
gastroduodenal artery
Definition
branch of the common hepatic artery to supply the stomach and duodenum
Term
hepatic veins
Definition
three large veins that drain the liver and empty into the inferior vena cava at the level of the diaphragm
Term
hepatofugal
Definition
flow away from the liver
Term
hepatopetal
Definition
flow toward the liver
Term
inferior mesenteric artery
Definition
arises from the anterior aortic wall at the level of the third or fourth lumbar vertebra to supply the left transverse colon, descending colon, sigmoid colon, and rectum
Term
inferior mesenteric vein
Definition
drains the left third of the colon and upper colon and joins the splenic vein
Term
IVC
Definition
largest venous abdominal vessle that conveys blood from the body below the diaphragm to the right atrium of the heart
Term
left gastric artery
Definition

arises from the celiac axis to supply the stomahc and lower third of

the esphagus

Term
left hepatic artery
Definition
small branch supplying the caudate and left lobes
Term
Left renal artery
Definition
arises from the posterolateral wall of the aorta directly into the hilus of the kidney
Term
Left renal vein
Definition
leaves the renal hilum, travels anterior to the aorta and posterior to the superior mesenteric artery to enter the lateral wall of the IVC
Term
Marfan's syndrome
Definition
hereditary disorder of connective tissue, bones, muscles, ligaments, and skeletal structures
Term
nonresistive
Definition
vessels that have high diastolic components and supply organs that need constant perfusion
Term
Portal vein
Definition
formed by the union of the superior mesenteric vein and splenic vein near the porta hepatis of the liver
Term
portal venous hypertension
Definition
most commonly results from intrinsic liver disease; however, it also arises from obstruction of the portal vein, hepatic veins, IVC, or prolonged congestive heart failure. May cause flow reversal to the liver, thrombosis of the portal system, or cavernous transformation of the portal vein
Term
pseudoaneurysm
Definition
pulsatile hematoma that results from leakage of blood into soft tissues abutting the punctured artery with fibrous encapsulation and failure of the vessel wall to heal
Term
resistive
Definition
vessels that have little or reversed flow in diastole and supply organs that do not need a constant blood supply
Term
resistive index
Definition
peak systole minus peak diastole divides by peak systole
Term
right gastric artery
Definition
supplies stomach
Term
right hepatic artery
Definition

supplies the gallbladder via the 

cystic artery

Term
right renal artery
Definition
arises fromthe lateral wall of the aorta, travels posterior to the IC to supply the kidney
Term
right renal artery
Definition
arises from the lateral wall of the aorta, travels posterior to the IC to supply the kidney
Term
right renal vein
Definition
leaves the renal hilum to enter the lateral wall of the IVC
Term
saccular aneurysm
Definition
localized dilation of the vessel
Term
spectral broadening
Definition
increased turbulencce is seenwithin the spectral tracing that indicates flow disturbance
Term
splenic artery
Definition

arises form the celiac trunk to supply

the spleen

Term
splenic vein
Definition
drains the spleen; travels horizontally across the abdomen to join the superior mesenteric vein to form the portal vein
Term
Superior mesenteric artery
Definition
arises inferior to the celiac axis to supply the proximal half of the colon and the small intestine
Term
superior mesenteric vein
Definition
drains the proximal half of the colon and small intestine; travels vertically to join the splenic vein to form the portal veins
Term
TIPS
Definition
Transjugular intrahepatic portosystemic shunt
Term
tunica adventitia
Definition
outer layer of the cascular system; contains the vasa vasorum
Term
tunica intima
Definition
inner layer of the vascular system
Term
tunica intima
Definition
inner layer of the vascular system
Term
tunica media
Definition
middle layer of the vascular system; veins have thinner tunica media than artery
Term
vasa vasorum
Definition
the tiny arteries and veins that supply the walls of blood vessels
Term
veins
Definition
collapsible vascular structures that carry blood back to the heart
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