Acupuncture needles are inserted into specific points on the body known as acupuncture points or acupoints, which are located along meridians or pathways believed to be the channels for the flow of Qi, or vital energy. The selection of points is tailored to each individual's condition and health needs. These points can be located all over the body, including the back, limbs, head, and ears, depending on the symptoms or disorders being treated.