Ebook Chapter 30-31 Flashcards
Coronary perfusion
Muscles of the heart are supplied by the right coronary artery (RCA), left anterior descending artery (LAD), and circumflex artery
Blood pumps from RV through the tricuspid valve, pulmonic valve into the ___________artery which bifurcates into the _______.
Main pulmonary artery
Right and left pulmonary arteries
The origin of the coronaries is ___________.
At the aortic root just posterior to the valve in the region of the right and left sinuses of Vasalva.
LAD usually supplies blood to where?
Anterior left ventricular wall, apex, and a portion of the interventricular septum with oxygenated blood
Circumflex artery supplies blood to
The LA and lateral and posterior walls of the LV
Right Coronary Artery which branches into the posterior descending artery supplies oxygenated blood to
Portions of the right and left ventricles and the MARGINAL ARTERY, which the marginal artery supplies blood to the RA and some of the RV.
The heart itself also has its own venous system which drains into the
Coronary sinus
4 major sections of the heart’s conduction system:
SA node, AV node, Bundle of HIS, Purkinje fibers
Damage to the intimal layer of coronary arteries can occur with
Lipid deposition or inflammation. Platelet aggregation at these sites contributes to the formation of plaque which form thrombi that can occlude the vessels in various degrees (myocardial infarction).
Significantly reduced blood flow to the _________ can cause sharp pain, aka
Myocardium
Angina (to the chest, shoulder, and arm)
Left coronary artery starts where
Above the left sinus of Vasalva
Right coronary artery starts
Above the right sinus of Vasalva
In what groove can you find the main trunk of the coronary arteries and the coronary sinus?
The AV (atrioventricular) groove or Coronary groove
The Anterior Posterior Groove has what arteries
The LAD of the L Coronary Artery
The Posterior Interventricular Groove has what artery/vein
The Posterior Interventricular descending coronary artery
Middle Cardiac Vein
This is more trabeculated than this
RV more trabeculated than LV
This is 3x thicker than this
LV 3x thicker than RV
RV has four bands, one is great to see on an echo
Parietal band
Setal band
Moderator band - can indicate the RV on an echo
Crista supraventricularis
Moderator band indicates what on an echo?
That you’re looking at the RV
Mitral valve and Tricuspid valve have leaflets or cusps?
LEAFLETS!
Aortic valve and Pulmonic valve have leaflets or cusps?
CUSPS!
Visceral layer of pericardium is called the
EPICARDIUM (thin outer layer of heart)
This layer lines the inner surface of the heart, can see it on an echo
Endocardium
