Head, Neck, and Spine Injury Test No. 3 From Paramedic Emergency Care 3rd Edition Progress Indicator: Question 1 of 15 1.  Which body parts should be kept in the same plane to ensure that further spinal injury does not occur during extrication? p. 462 Choices: Ear, arm, leg Eyes, back, buttocks Mouth, nipple, knee Nose, naval, toes