Transverse section of back muscles at level of thoracic spine; erector spinae are shown in 3 columns and transversospinalis muscle is shown in 3 layers.

Sagittal MRI of cervical and upper thoracic spine, lateral view (Cb, cerebellum; M, medulla oblongata; PT, pos. tubercle; 1, nasopharynx; 2, oropharynx; 3, laryngopharynx; Ton, tongue; D, dens; SP, spinous process; SC, spinal cord; IV, intervertebral disc

Three step process for removing a helmet from an accident victim. (Step 3) After the helmet has been removed, the rescuer at the top places his hands on either side of the victim's head with his palms over the ears.

Manipulation technique 3, thoracic spine