Question

the thoracic surgeon will use a thoracoscope to visualize the inside of the thoracic cage. (do not use the slashes)
question 9
but first, the thoracic surgeon must create a enter answer in the chest so the scope can enter the thoracic cage. (do not use the slashes)
question 10

Explanation:

To insert a thoracoscope into the thoracic cage for visualization, a small opening or incision is required to allow the instrument to pass through the chest wall.

Answer:

incision