Heart embryo FA 2015 Pg 268-269

Question 1

Trabeculated part of L and R atria represent?

Answer 1

Primitive atrium

Question 2

Trabeculated part of L and R ventricle represent

Answer 2

Primitive ventricle

Question 3

Smooth part of L atrium is from?

Answer 3

Primitive pul. vein

Question 4

Smooth part of R atrium is from?

Answer 4

Sinous venous Right horn
RR RA=Rhorn
SS smooth sinous venous

Question 5

Smooth part of L ventricle is from?

Answer 5

Bulbus cordis

Question 6

Smooth part of R ventricle is from?

Answer 6

bulbus cordis

Question 7

where is aorta from?

Answer 7

Truncus arteriosus

Question 8

where is pul. trunk?

Answer 8

Truncus arteriosus

Question 9

Coronary sinus from?

Answer 9

L horn of sinus venosus

coronary sinus dumps its blood into RA

Question 10

SVC from?

Answer 10

R common cardinal vein+ R anterior cardinal vein

Question 11

Future IVC from?

Answer 11

R vitelline vein

Question 12

What does R posterior cardinal vein gives to?

Answer 12

future azygos vein

Question 13

Explain patent foramen ovale? DDx with ASD

Answer 13

two septa do not fuse
so septum primum and septum secundum does not fuse

ASD: no septum secundum

Question 14

VSD is most common in which part of septum?

Answer 14

membranous

Question 15

Membranous IVS is formed by?

Answer 15

AP septum spiral and fuse with muscular part forms membranous which close IV foramen

Question 16

endocardial cushion contributes to

Answer 16

atrial septation and membranous portion of IV septum

Question 17

all the valves are from?

Answer 17

endocardial cushions