A 29-year-old female develops sepsis and, as a consequence, she experiences profound vasodilation. Her

A 29-year-old female develops sepsis and, as a consequence, she experiences profound vasodilation. Her blood pressure is 80/55 mmHg.
 
[1] What is sepsis and how/why does it cause vasodilation?
[2] What is afterload? What effect does vasodilation have on the afterload?
[3] What effect does vasodilation have on blood pressure? What is her Mean Arterial Pressure?
[4] What homeostatic mechanisms will be involved to bring her blood pressure back to normal? (Hint: hormones)