In medical device market of virus test (COVID-19) using PCR analysis , clarify the buyer, user and payer .- Which hospital should you go to when your ankle is sprained? Answer with your reasons for your choice.Second assignment :- Compare the blood vessel structures.- Describe why the endothelial cells are important in vascular diseases.- Describe the pressure, flow and vessel shape during systolic and diastole periods, respectively.- Describe the fluid movement in the capillary.Comments from CustomerDiscipline: Bioengineering