The vast majority of these nerves Manage the capabilities of your upper extremities and help you sense your arms, shoulder, and back of the head.  Each and every nerve offers sensation to a specific space of your body referred to as a dermatome.  Stack Exchange community includes 183 Q&A communities https://franciscogbrhw.activoblog.com/41942899/the-definitive-guide-to-neck-nerve-block-injection-singapore