The thoracic cavity has subdivisions.
Answer*:
The name of the cavity that surrounds the heart?
Which cavities surround the lungs?
(Each in one word.)

Thoracic

Explanation:

The thoracic cavity is also knows as the chest cavity and it contains the trachea, bronchi, lungs, esophagus, heart, great blood vessels, thymus gland, lymph nodes and the nerve and it also contains the smaller cavities like for example: Pleural Cavities surround each lung. Pericardial cavity surrounds the heart.

c. the runner should sprint as fast as possible to the finish line.