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Flashcards in Cardiovascular Anatomy Deck (101)
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1

What germinal layer does the heart develop from?

Mesoderm

2

What region does the heart develop in?

Cephalic region

3

What structure is a coalescence of angioblastic tissue that forms first in heart development

Endocardial tubes

4

When the endocardial tubes fuse, what do they form?

The primitive heart tube

5

When the heart tube forms on its self, what dilations form?

Atrial, ventricular, bulbis cordis

6

After the primitive heart tube forms, what forms at the proximal end?

Sinus venosus

7

After the primitive heart tube forms, what forms at the distal end?

Truncus arteriosus

8

What divides the atrial dilation in the 5th week?

Septum primum

9

What hole appears in the upper part of the septum primum?

Ostium secondum

10

What appears to the right of the septum primum?

Septum secondum

11

The ventricular septum forms upwards towards what structure?

Endocardial cushions

12

The truncus arteriosus divides into what? When does this happen?

Aortic and pulmonary tubes, 7th and 8th week

13

When the truncus arteriosus folds, what position does the pulmonary artery lie in initially?

Anterior

14

What is the connection between the left pulmonary artery and arch of the aorta?

Ductus arteriosus

15

When the ductus arteriosus closes, what is it called?

Ligamentum venosum

16

What is the most common congenital anomaly that can occur during heart formation?

VSD

17

What is the most common atrial septal defect?

Ostium secondum defect

18

If the ductus arteriosus remains open, what is it called?

Patent ductus arteriosus

19

ASD, VSD, and PDA are all what type of shunts?

Left to right

20

What type of shunt results in cyanosis?

Right to left

21

Fallot's tetralogy results in what defects?

Pulmonary stenosis, Right ventricular hypertrophy, VSD, Dextropositioning of the aorta

22

Where are the borders of the heart?

3rd right costal cartilage 2 cm from sternum
6th right costal cartilage 2 cm from the sternum
2nd left costal cartilage 2 cm from the sternum
5th left intercostal space 7-9 cm from the midsternal line

23

What are the origins of the right atrium?

Sinus venosus and from the true atrium

24

Where is the rough part of the right atrium formed from?

True atrium

25

Where is the smooth part of the right atrium formed from?

Sinus vensosus

26

What separates the smooth and rough part of the right atrium?

Crista terminalis

27

What openings are found in the the right atrium?

For the SVC, IVC, Coronary sinus; tricuspid valve

28

What is the ovale depression interarterial septum?

Fossa ovale

29

What is the fossa ovale a remnant of?

Septum primum

30

What is the elevated ridge at the edge of the septum secondum?

Limbus of the fossa ovalis