Answer:
There is a valve through which blood passes before leaving each chamber of the heart. The valves prevent the backward flow of blood. These valves are actual flaps that are located on each end of the two ventricles (lower chambers of the heart).
Explanation:
Answer:
patients either has a phobia for injections or he or she don't like injections
Explanation:
so I would recommend that the patient should be told on how his or her health is deteriorating and also should be encouraged on what the drugs will do and also tell him or her that the injection will have a positive effect not a negative one of him or her