Marian recently went through a surgery in which blood vessels were taken from her legs and then attached to her coronary arteries to allow a bypass of blood flow around some narrowed vessels. Which surgical procedure was performed on Marian

Off-pump coronary artery bypass

Explanation:

In this heart bypass surgery a vein or artery from another part of the body is taken and used as a graft to replace the blocked coronary artery. The benefit of this type of surgery is that there is negligible chances of rejection of the graft because the graft has been taken from the same body. A surgical cut is made inside leg, between the ankle and groin and one end of the graft is attached to coronary artery whereas the other end to the opening of aorta.

Radial artery of wrist is also common graft in heart bypass surgery.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

true is the answer : )