Anatomy The anterior triangle occupy the side of the neck in front of sternomastoid muscle. Each triangle presents boundaries in front A Anterior median line of the neck extending from symphysis menti to supra sternal notch B The midline of the neck C Midline of the neck upto the sternoclavicular joint D Posterior border of thyroid gland 💡 Explanation The anterior triangle occupy the side of the neck in front of sternomastoid muscle. Each triangle presents boundaries in front ✓ Correct Answer: A. Anterior median line of the neck extending from symphysis menti to supra sternal notch