True or false?

Determine whether each statement regarding the structure and location of the esophagus is true or false. 1. The esophagus extends from the nasopharynx to the stomach. (Click to select) v 2. The esophagus is about 25 meters long. (Click to select) v 3. The esophagus lies anterior to the trachea. (Click to select) v 4. The muscularis of the esophagus is different from other parts of the digestive tract because the superior part of the esophagus consists of skeletal muscle. (Click to select) w 5. The esophagus contains both an upper and a lower esophageal sphincter that regulates the movement of materials into and out of the esophagus. (Click to select) v 6. The esophagus contains numerous mucous glands that produce a thick, lubricating mucus that coats the inner surface of the esophagus. (Click to select) v