Summary Cardiac Muscle - Work Output, Cardiac Cyle (Guyton & Hall)

-

Valves -




* enable How of blood Only in antero grade direction


* prevent backflow


* Open and Hose passiveIy
↳ dep ending on pressure gradient of blond




A- trio -
ventricular wahres

1) papillary muscle contra cts

2) van es of Avvalves are Pull ed towards ventricle
↳ pr events backflow


* Openings are surrounded by fibroustissule
↳ separates atria and ventricles & synctial contra ctions

↳ makes upskeleton Of heart



* pr event back flow from ventricles to atria
↳ during systole



Semilunar wahres



* con cave towards great arterie

* convex towards ventricle


* small Opening great er blood Velocity

* snap closure : due to high pressure in the arterie s at the end of systole


* svbjected to much great er mechanical abrasiin



ftp.reventbackflowfromaortaandpvlmonaryartery info verstrich es

↳ during diastole