Final answer:
The esophagus is the funnel-shaped muscular tube that runs from the base of the skull to the vertebra C6. It connects the pharynx to the stomach.
Step-by-step explanation:
The funnel-shaped muscular tube that runs from the base of the skull to the vertebra C6 is the esophagus. It connects the pharynx to the stomach and is approximately 25.4 cm (10 in) in length. The esophagus is located posterior to the trachea and passes through the diaphragm before reaching the stomach.