What is the anatomical location of the SI-17 acupuncture point?

The SI-17 acupuncture point, also known as "Tianrong," is anatomically located between the angle of the mandible and the anterior border of the sternocleidomastoid (SCM) muscle. This specific placement is key for practitioners because it correlates with the position of several important anatomical structures, including the carotid artery and the internal jugular vein, making it a significant point in acupuncture for addressing conditions related to the throat and neck area.

The angle of the mandible serves as a landmark for practitioners, as its location is easily identifiable on patients. The SCM muscle, which runs from the sternum and clavicle to the mastoid process of the temporal bone, further helps define this area. The proximity of SI-17 to these critical structures highlights its functional importance in treating various health issues, including those associated with the throat and ear.

The other options reference locations that do not match the defined anatomical position of SI-17. For example, the lower border of the zygomatic bone pertains to a different point related to the stomach or gallbladder channels, while the suprascapular fossa is associated with points on the upper back. The choice that indicates a measurement of distance from SI-5 does not