Final answer:
A transtracheal nerve block is performed by piercing the Cricothyroid membrane to provide anesthesia to the tracheal mucosa for surgeries.
Step-by-step explanation:
A transtracheal nerve block is performed by piercing the Cricothyroid membrane. This procedure aims to provide anesthesia to the tracheal mucosa during various surgical procedures involving the trachea and the larynx. The cricothyroid membrane is located between the thyroid cartilage and the cricoid cartilage, two of the major structures forming the larynx.