The Semispinalis Thoracis runs from the transverse processes to the spinous processes of the vertebra above. true or false?

• A. True
• B. False; It runs from the transverse processes to the lamina
• C. False; It runs from the spinous processes to the transverse processes
• D. False; It runs from the articular processes to the spinous processes

Answer: (A)

The main idea is how semispinalis thoracis fibers run: they originate on the transverse processes of lower vertebrae and insert on the spinous processes of vertebrae higher up, typically about 4–6 segments above. That upward, medial path from a transverse process to a superior spinous process is exactly what's described, so the statement is true. This muscle is part of the transversospinalis group, contributing to spinal extension and contralateral rotation. The other descriptions don’t fit because it does not arise from the lamina or articular processes, nor does it run from a spinous process to a transverse process.