Now, on the posterior side, you find, as well, another line, letâs say, but this time called the intertrochanteric crest that is also between the neck of the femur and the shaft and runs, as well, from the greater trochanter all the way down to the lesser trochanter.
The upper back has the most structural support, with the ribs attached firmly to each level of the thoracic spine and very limited movement. The lower back (lumbar vertebrae) allows for flexibility and movement in back bending (extension) and forward bending (flexion).
There are 12 thoracic vertebra in human skleletal Twelve. The adult body has 7 cervical vertebra, 12 thoracic vertebrae, and 5 lumbar vertebrae. It can be remembered as: breakfast at 7am, lunch at 12noon, and dinner at 5pm. There are 12 thoracic vertebrae.