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Anatomy Exam 3 > Portal Caval System > Flashcards

Flashcards in Portal Caval System Deck (29)
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1

_____ vein in the ligamentum teres, used to carry blood in from the umbilical cord. It is accompanied by tiny paraumbilical veins, which remain patent

The (obliterated) umbilical vein

2

_____ veins collect blood from the body wall around the unbilicus

paraumbilical veins

3

Nearly all venous blood from the gut drains to the liver via the _____ vein

portal vein

4

The ___ vein Drains same structures supplied by the SMA

Superior mesenteric vein

5

The _____ veins then drain blood from the liver to the IVC

hepatic vv.

6

T/F: Splenic v. Other foregut vv. have same names as arteries

True

7

Which foregut vein has a different name as its artery?

Celiac

8

The ____ vein Drains same structures supplied by the IMA

Inferior mesenteric vein

9

left and right gastric vv., cystic v.,PD vv., paraumbilical vv. drain to the ____ vein

To the Portal Vein

10

short gastric vv., left gastroomental v. drain to the ____ vein

To the Splenic Vein

11

right gastroomental v.,PD vv. drains into ____ vein

To the Superior Mesenteric Vein

12

Which foregut veins drains into more than one of the main foregut veins?

Pancreaticoduodenal vein

13

Which veins do the pancreaticoduodenal veins drain into?

Portal vein and superior mesenteric vein

14

How many major sites of anastomoses are there between the portal and caval venous systems?

4

15

The tiny veins in these anastomoses can become engorged as a response to _______, where passage of venous blood from the portal vein through the liver is impeded

portal hypertension

16

engorged vein are called _____; result of portal hypertension

varices

17

can be caused by cancer, cirrhosis, thrombosis, or congenital malformation of the IVC. Besides varices, it is associated with splenomegaly and ascites

Portal hypertension

18

Which anastomosis of the portal and caval system is the most important?

Anastomosis of the left gastric vein (branch of portal v.) with the azygos vein (branch of SVC)

19

Which anastomosis results in esophageal varices?

Anastomosis of the left gastric vein (branch of portal v.) with the azygos vein (branch of SVC)

20

The resulting ________ are very dangerous, because they can bulge into the lumen of the esophagus and be ruptured when food is swallowed

esophageal varices

21

Internal bleeding from ruptured esophageal varices is one of the most common causes of death in patients with

portal hypertension

22

Rectal varices are varices resulting from which anastomosis of portal caval system?

Anastomoses of the superior rectal vein(branch of portal v.)with the middle and inferior rectal veins (branches of IVC)

23

Bright red bleeding of the stool is characteristic of _____ varices

rectal varices

24

Which anastomosis is near the umbilicus region and when engorged superficial veins are called caput medusae (Medusa's head)?

Anastomoses of the paraumbilical veins (branches of portal v.)with the thoracoepigastric v. (branch of SVC) and the inferior and superficial epigastric vv. (branches of IVC)

25

Which anastomosis is very rare that are typically asymptomatic when engorged?

Anastomoses between the inferior mesenteric vein (branch of the portal v.)and veins of the posterior abdominal wall, which are IVC branches and which are connected to the hemiazygos vein (branch of SVC)

26

How do visceral pain axons for the thorax and abdomen run?

follow sympathetics back as far as spinal nerve proper

27

Cell bodies for visceral pain are found in

dorsal root ganglion

28

Visceral pain pathways pass through the _______ ramus communicans

white

29

How do Visceral sensory other than pain axons run?

follow parasympathetic