A patient presents with weakness in his grip strength and ti…

A patient presents with weakness in his grip strength and tingling in his pinky finger. A lateral spine x-ray is taken. It is determined the patient’s symptoms are caused by a narrowing of the spinal column that is compressing an anterior rami nerve root. The nerve root involved exits the spinal column above the vertebral bone labeled “T1.” Assuming the patient has the correct number of vertebra, which nerve root is involved?