I always remember the following from my Army first aid test days:

Breathing
Bleeding
Beating
Shock
Bones
Burns
Bumps

If it's not obvious that is my mnemonic key for:

Check airway
Check traumatic blood loss
Check for heart beat
Check for shock
Check for broken/protruding bones
Check for burns
Check for head injuries

See pages 1-9 though 1-13 here:
www.modernsurvivalonline.com/Files/medical/FM4-25.11.pdf