Final answer:
The pretracheal space is bordered by the esophagus, thyroid gland, and carotid sheath. It is a fascial space that spreads infections. The esophagus connects the pharynx to the stomach, while the thyroid gland produces hormones.
Step-by-step explanation:
The pretracheal space is bordered by the esophagus posteriorly, the thyroid gland anteriorly, and the carotid sheath laterally. It is a fascial space that serves as a conduit for spreading infections. The esophagus is a muscular tube that connects the pharynx to the stomach, while the thyroid gland is a butterfly-shaped endocrine gland that produces hormones. The carotid sheath contains the carotid artery, internal jugular vein, and vagus nerve.