Question 42 (10 points)
Describe the four major types of transplant grafts.

1. Autograft- A patient's own tissue - an autograft - can often be used for a surgical reconstruction procedure. Autograft tissue is the safest and fastest-healing tissue that can be used.
2. Allograft-
Allograft tissue, taken from another person, takes longer to incorporate into the recipient's body, but there is no second surgical site to heal.
3. Xenograft- A surgical graft of tissue from one species to an unlike species. A graft from a baboon to a human is a xenograft.
4. Isograft- Agraft of tissue between two individuals who are genetically identical

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.