Final answer:
A cricothyroidotomy is performed at the cricothyroid ligament, situated below the thyroid cartilage and the Adam's apple in the neck, which is necessary when a quick airway access is needed.
Step-by-step explanation:
A cricothyroidotomy is performed in an anatomic location known as the cricothyroid ligament, which is located between the thyroid cartilage and the cricoid cartilage. This area is at the front of the neck, just below the laryngeal prominence region where the two laminae of the thyroid cartilage join, forming a notable protrusion known as the "Adam's apple." This procedure is indicated when the airway needs to be quickly secured and endotracheal intubation is not possible due to certain injuries or blockages.