20 !

the following is an excerpt from the case study "it's all greek to me": "i am sorry to give you bad news. nikoleta does have anemia but, unfortunately, giving her a high iron formula was exactly the opposite of what should be done. nikoleta's disorder has a genetic basis." iron is an important structural component of hemoglobin. explain why this treatment failed and how the true cause of nikoleta's anemia was discovered.

there's no answer choices to go with this.

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.