Warmup/stretches probably
With spinal cord injury if you injure the cervical or thoracic areas, it will affect breathing, could cause you to breath with intercostal muscles because diaphragm doesn't function or cause paralysis.
traumatic brain injury can leave injuries to multiple areas. could cause shock, death, heart issues, and so on.
I think ur answer would be a
I think it is cerebrum but im not totally sure so you might want to make sure.
The ability of a muscle to exert force is Endurance.