Which point is located at the posterior-lateral corner of the nail of the 1st toe?

The correct point located at the posterior-lateral corner of the nail of the 1st toe is indeed Liver 1 (Liv-1). This acupuncture point is specifically positioned at the inner corner of the toenail of the big toe, helping to support various functions related to the liver, such as promoting the flow of Qi and regulating emotions.

Understanding the anatomy and precise location of acupuncture points is crucial in acupuncture practice. Liv-1, also known as "Dadun," is classified as a wood point and is particularly significant for treating issues related to the liver and helping with conditions such as emotional imbalance and digestive disorders.

The other options do not occupy this specific location. Gallbladder 41 (GB-41) is located between the fourth and fifth metatarsal bones, while Liver 2 (Liv-2) is found on the dorsum of the foot, in the web space between the first and second toes. Gallbladder 38 (GB-38) is situated on the lateral side of the lower leg, far from the big toe. Understanding these distinctions aids practitioners in accurately identifying acupuncture points for effective treatment.