TOPIC 10B. Aorta abdominalis, v. cava caudalis, v. portae

Question 1

when does the ao abdom start

Answer 1

when the aorta passes through the hiatus aorticus of the diaphragm

Question 2

branches of ao abdom

Answer 2

aa lumbales
a phrenicoabdominalis
a coeliaca
a mesenterica cran/caud
aa renales
aa testicularis/ovarica
a circumflex ilium prof
a iliaca ext
a iliaca int
a sacralis mediana

Question 3

ISDs of ao abdom

Answer 3

1. a phrenicocaudalis is a trunk in ca, while separate arteries in other species
2. a circ ilium prof position - off ao abdom in ca, while off a iliaca ext in ru, eq and sus
3. a abdominalis caudalis (off a iliaca externa) is not in eq, ru.

Question 4

where does vena portae collect blood from and drop it to

Answer 4

all unpaired organs of the abdomen and delivers it to the liver

Question 5

name the 3 root vessels of the vena portae

Answer 5

mesenterica cran
mesenterica caud
splenic veins

Question 6

what does the vena portae form in the liver

Answer 6

sinusoids - blood filled caivities surrounded by hepatic celss

Question 7

what doe the sinusoids drain into in the liver

Answer 7

the central vein

Question 8

what does the central vein form

Answer 8

interlobulary veins which form hepatic veins

Question 9

what do the hepatic veins drain into

Answer 9

caudal vena cava

Question 10

where does the caudal vena cava collect blood from

Answer 10

the stomach liver and spleen

Question 11

where does the caudal vena cava originate

Answer 11

sinus venarum cavarum

Question 12

what suspends the caudal vena cava

Answer 12

plica vena cava

Question 13

what does the caudal vena cava run through

Answer 13

liver sulcus vena cava and passes through foramen vena cava in the diaphragm

Question 14

branches of the caudal vena cava

Answer 14

v. phrenicoabdominalis
vv. hepaticae
vv. lumbalis
v. renalis
v. testiculata/ovarica
v. circumflex ilium profunda
v. iliaca communis
v. iliaca externa
v. iliaca interna

Question 15

branches of v phrenicoabdominalis

Answer 15

v abdominalis cranialis

v phrenica caudalis

Question 16

ISDs of vena cava caudal branches

Answer 16

v abdominalis cranialis (off v phrenicoabdominalis) not in eq
v renalis may give off left v testiculata/ovarica in ca