Heart embryology

Question 1

Truncus arteriosus

Answer 1

Ascending aorta and pulmonary trunk

Question 2

Bulbus cordis

Answer 2

Smooth parts (outflow tract) of left and right ventricle

Question 3

Endocardial cushion

Answer 3

Atrial septum, membranous interventricular septum, AV and smilunar valves

Question 4

Primitive atrium

Answer 4

trabeculated part of the left and right atria

Question 5

Primitive ventricle

Answer 5

trabeculated part of the left and right ventricles

Question 6

Primitive pulmonary vein

Answer 6

Smooth part of the left atrium

Question 7

Left horn of sinus venosus

Answer 7

coronary sinus

Question 8

Right horn of sinus venosus

Answer 8

smooth part of R atrium (sinus venarum)

Question 9

Right common cardinal vein and right anterior cardinal vein

Answer 9

SVC

Question 10

What does the allaNtois - urachus become?

Answer 10

mediaN umbilical ligamen

urachus is part of allantoic duct between the bladder and umbilicus

Question 11

What does the ductus arteriosus become?

Answer 11

Lig arteriosum

Question 12

What does the ductus venosum become?

Answer 12

Ligamentum venosum

Question 13

What does the foramen ovale become?

Answer 13

fossa ovalis

Question 14

What does the Notochord become?

Answer 14

Nucleus pulposis

Question 15

What does the umbiLical arteries become?

Answer 15

MediaL umbilical ligaments

Question 16

What does the umbilical vein become?

Answer 16

ligamentum teres hepatis (contained in the falciform ligament)