Kidneys
Ureters
Bladder
Urethra
Are in all animals urinary system
Stress causes the blood vessels to constrict, also causes the chemical cholesterol into the bloodstream too much of that and you might have a heart attack due to the clogging of vessels
Headache, nausea, hunger, ect.
R- Rest (try to stay off of the injury for a few days)
I-Ice (ice the injury multiple times a day, but not directly to the skin).
C-Compress (compress the injured area with a elastic bandage, for example).
E-Elevate (elevate the injury adequately above the heart on a pillow).
hope this helps