The 12 thoracic vertebrae are labeled T1 through T12, with T1 being closest to the skull and T12 being closest to the tailbone. The T5 is the fifth thoracic vertebra closest to the skull. Most thoracic vertebrae have a variety of characteristics in common. The middle portions of these vertebrae are heart-shaped.
The transverse processes are long, with the upper vertebral notches deeper than any of those found on the other thoracic vertebrae. The thoracic spinal nerve 1 passes through underneath T1. Second thoracic vertebrae (T2): The T2 vertebra is larger than T1 vertebra. The thoracic spinal nerve 2 passes through underneath T2.
Your T5 vertebra is located in your spine, roughly halfway down your back. It’s the fifth of our twelve thoracic vertebrae, and is attached to ribs on both sides of your body.