Embryology - Part 2

Question 1

is the celiac artery the artery of the foregut, midgut or hindgut?

Answer 1

foregut

Question 2

is the superior mesenteric artery the artery of the foregut, midgut or hindgut?

Answer 2

midgut

Question 3

is the inferior mesenteric artery the artery of the foregut, midgut or hindgut?

Answer 3

hindgut

Question 4

which veins carry oxygenated blood from the placenta to the embryo?

Answer 4

umbilical veins

Question 5

which veins drain the body of the embryo?

Answer 5

cardinal veins

Question 6

which veins take blood from the yolk sac to the sinus venosus?

Answer 6

vitelline veins

Question 7

what are the three important shunts in the foetal circulation?

Answer 7

ductus venosus, ductus arteriosus, foramen ovale

Question 8

what does the ductus venosus do?

Answer 8

shunts left umbilical vein blood flow directly to the IVC, allows oxygenated blood from the placenta to bypass the liver

Question 9

what does the ductus arteriosus do?

Answer 9

allows blood that still escapes to the right ventricle to bypass the lungs

Question 10

what does the foramen ovale do?

Answer 10

allows blood to enter the left atrium from the right atrium, allows blood to bypass the lungs

Question 11

when does the lymphatic system begin to develop?

Answer 11

end of 6th week

Question 12

where does the lymphatic system begin to develop?

Answer 12

around the main veins

Question 13

what does the ductus venosus become after birth?

Answer 13

ligamentum venosum of the liver

Question 14

what does the ductus arteriosus become after birth?

Answer 14

ligamentum arteriosum

Question 15

what does the foramen ovale become after birth?

Answer 15

closed fossa ovalis

Question 16

which infection is associated with a patent ductus arteriosus?

Answer 16

maternal rubella infection

Question 17

is patent ductus arteriosus more common in males or females?

Answer 17

females