Introduction to the Heart and Pericardium Flashcards
Where is the phrenic nerve attached to in the heart
The phrenic nerve is adhered to the lateral sides of the pericardial sac
Where is the oblique pericardial sinus
Pericardial cul-de-sac behind the heart which opens into the pericardial space proper inferiorly
Where is the transverse pericardial sinus
Posterior to the pulmonary trunk and proximal part of the aorta
In front of the SVC
Describe the structure of the aortic valve
There are three cusps that work to pump the blood; the valve has two small holes that provide the blood supply for coronary arteries
Left and right coronary arteries
Anterior interventricular branch/Left Anterior Descending (LAD) artery
Left Marginal Branch
Diagonal Branch
Fossa ovalis
Remnant of embryology; depressed structure over the right interatrial septum (remnant of foramen ovale)
Cardiac Tamponade
There is a leak in the coronary arteries that begin to spill blood. This blood leaks and remains in the pericardium; increasing with every heart beat
Eventually, the heart’s space is taken up and it just gives up
Which coronary artery is most likely to be blocked
Anterior interventicular branch (LAD)
Moderator Band
Thick band of cardiac muscle found in the right ventricle of the heart
Right AV passes in it
Papillary Muscles of the heart
Muscles in the ventricles that attach to the cusps of the AV valves
Pectinate Muscles of the heart
“teeth of a comb” shaped parallel muscular columns that are present on the inner wall of the right and left atria
Chordae Tendinae
Thin fibrous cords that extend from the cusps of the AV Valves to the papillary muscles within the ventricles
