Please answer the following questions:1.- What is a Pericarditis? Why the patient with pericarditis,

Please answer the following questions:
1.- What is a Pericarditis? Why the patient with pericarditis, develops edema?
2.- Please name the vessels originated from the aortic arc. Please name the principal coronary arteries branches.
3.- What is blood pressure? Please explain the differences between systolic and diastolic pressure.
4.- Please describe the blood flow through the heart. Please name all the structures.
5.- What is the lymphatic system? Which are the organs of the lymphatic system?