Embryology - FINISH THIS

Question 1

When is the first heart contraction?

Answer 1

Day 22

Question 2

How common are congenital heart defects?

Answer 2

5-8 in 1000

Question 3

What % of all congenital defects are heart?

Answer 3

20%

Question 4

What is the epicardium?

Answer 4

Visceral layer of pericardium, derived from visceral mesoderm
Coronary arteries derived from here

Question 5

What is the myocaridum?

Answer 5

Contractile middle layer, derived from the visceral mesoderm

Question 6

What is the endocardium derived from?

Answer 6

Heart tube

Question 7

What is vasculogenesis?

Answer 7

Development of blood vessel from scratch

Question 8

What is angiogenesis?

Answer 8

Making blood vessels from pre-exisitng vessels

Question 9

What forms the primitive heart tube?

Answer 9

Endocardial tubes fuse (formed from angioblasts, which come from mesoderm)

Question 10

What is the primitive heart tube made from?

Answer 10

mesoderm

Question 11

What forms the myocardium?

Answer 11

visceral mesoderm

Question 12

What does the myocardium secrete between the endocardium and myocardium? (does not contain any cells)

Answer 12

cardiac jelly

Question 13

What does cardiac jelly give rise to?

Answer 13

Separating structures