Physiology 12.7.12 Cardiac Cycle Flashcards
1
Q
What can rheumatic herat disease cause in valves
A
Can lead to calcification of valve and lead to BOTH stenosis and incompetence
2
Q
What prevents AV valves from bulging excessively into atria when they close?
A
The Chordae Tendinae!
3
Q
What causes the Dicrotic Noth in the recording of Arotic pressure?
A
As ejection of ventricular contraction slows, the elastic recoil of arteries propels blood distally AND PROXIMALLY (to help close emilunar vales)
THe pressure wave created by the recoil of blood striking closed semilunar valve creates dicrotic notch
4
Q
What does dicrotic notch mark?
A
makrs END of VENTRICULAR systole and beginning of Diastole
