Cardiac Anatomy Flashcards
A murmur is heard at the second left intercostal space along the left sternal border. Which valve is this?
pulmonic valve
What is the lining of the inner walls of the heart called?
endocardium
What is the thick, muscle layer of the heart wall called?
myocardium
Which heart valve type is connected to S1, or the “lub” sound?
AV valves (tricuspid + mitral)
Which heart valve type is connected to S2, or the “dub” sound?
semilunar valves (pulmonary + aortic)
Which chamber does blood coming from the pulmonary veins enter?
left atrium
What is excitability?
property of myocyte cells, ability to react/respond to stimulus
How do you treat endocarditis?
rest, IV antibiotics, 6 weeks PO antibiotics
Which chamber does blood coming from the venae cavae enter?
right atrium
What is the wall between the left and right ventricles called?
interventricular septum
Where do chordae tendineae originate?
papillary muscles in ventricles
Stenosis of mitral valve causes an initial increase in pressure in:
left ventricle
What is the coronary sinus?
The coronary sinus is a coronary vessel outside heart that emptied blood into the right atrium
Why is the left ventricular wall thicker than the right ventricular wall?
The LV needs to be thicker and have more muscle to pump a larger volume of blood through greater resistance into a smaller valve, and thereby expand the thoracic cage.
What are the two most common valve disorders?
aortic stenosis, mitral insufficiency
