Hehe have a great day:) can someone tell me why I feel pain my my heart or chest? Like I’m not heartbroken nor I have problems in my heart? ♥️❤️❤️✨take some hearts haha... I’m not gonna lie I’m not like this in reality. (I’m cold and brutally honest) oh shoot is it because of my asthma?

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.