Cardiovascular Anatomy Flashcards
When does the heart develop in the fetus?
3rd week
What forms the proximal end of the heart?
Sinus Venosus
What forms the distal end of the heart?
Truncus arteriosus
When does the septum primum divide atrial dilation?
5th week
What is the hole that forms above the septum primum?
Ostium Secendum
What forms to the Right of the Septum Primum?
Septum secundum
What does the Truncus arteriosus divide into?
aortic and pulmonary tubes
When does the Truncus arteriosus divide into the aortic and pulmonary tubes?
7th and 8th weeks
What does the ductus arteriosus do?
shunts oxygenated blood from left pulmonary artery to arch of aorta
What happens to the ductus arteriosus after birth?
closes to form ligamentum arteriossum
What is the most common congenital heart defect?
Ventricular Septal Defect
What is the most common atrial defect?
Atrial Septal Defect
What is the most common cyanotic congenital heart defect?
Fallot’s Tetralogy (PROV)
Fallot’s Tetralogy?
(PROV)
- pulmonary stenosis
- right ventricular hypertrophy
- overriding aorta (dextroposition)
- ventricular sepal defect
What occurs in cyanotic conditions?
Deoxygenated blood goes from Right side to Left side
What are the non-cyanotic heart conditions?
(DDD)
- Atrial Septal Defect
- Ventricular Ductus Arteriosus
What are the 2 origins of the Right Atrium and Left Atrium?
- Sinus venosus = smooth
- True Atrium = rough part
What separates the rough and smooth parts of the Right Atrium?
Crista terminalis
Where does the majority of venous blood drain into the heart from?
coronary sinus
What type of muscles make up the Right Ventricle?
Trabeculae and papillary muscles
What does the Infundibulum arise from?
the bulbous cordis
How much thicker is the Left ventricle compared to the Right ventricle?
3x w/ trabeculae carneae
What separates the Left from the Right ventricle?
interventricular septum
Where is the aortic valve located?
2nd R intercostal 1.25 cm from sternum
Where is the pulmonary valve located?
2nd L intercostal 1.25cm from sternum
Where is the Tricuspid valve located?
4th L intercostal 1.25cm from sternum
Where is the Mitral valve located?
5th L intercostal 7 - 9cm from sternum
What valve shunts blood from the left ventricle to the aorta?
Aortic
What valve shunts blood from the right ventricle to the pulmonary trunk?
Pulmonary
What valve shunts blood from the right atrium to the right ventricle?
Tricuspid