While in a meeting, george’s boss experienced cardiac arrest, which caused him to collapse and lose consciousness. he stopped breathing and his skin started to turn blue. george called 9-1-1.

what should george do next?

he should use the aed only.
he should perform cpr only.
he should perform cpr first, then use the aed.
he should use the aed first, then perform cpr.

Now think of ways in which using healthcare services effectively can foster your health and ways in which not being aware of them is a health risk

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants

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.