ANATOMY

Detailed explanation-1: -The thoracic region contains 12 vertebrae, denoted T1-T12. The intervertebral discs, along with the laminae, pedicles, and articular processes of adjacent vertebrae, create a space through which spinal nerves exit.

Detailed explanation-2: -Your thoracic spine consists of 12 vertebrae, labeled T1 through T12. Vertebrae are the 33 individual, interlocking bones that form your spinal column.

Detailed explanation-3: -The fifth thoracic vertebra, together with the fourth, is at the same level as the sternal angle. The human trachea divides into two main bronchi at the level of the 5th thoracic vertebra, but may also end higher or lower, depending on breathing. The thoracic spinal nerve 5 (T5) passes out underneath it.

Detailed explanation-4: -As mentioned above, our vertebrae are numbered and divided into five regions: cervical, thoracic, lumbar, sacrum, and coccyx.

Detailed explanation-5: -Most people have 5 lumbar levels (L1-L5), although it is not unusual to have 6. Each lumbar spinal level is numbered from top to bottom-L1 through L5, or L6. The low back vertebral bodies are larger, thicker block-like structures of dense bone.