This begins at the nail of the ring finger and passes through the centre of the lateral side of the hand. At the elbow, it penetrates between the elbow joints and radius, proceeds across the shoulder and around the shoulder blade to the 7th cervical vertebra. From there, it proceeds forward across the trapeze muscle to the hollow above the clavicle and sternum, dissipating into the pericardium and descending across the upper, middle and lower emitters. Another branch originates in the centre of the chest, which proceeds upward across the supraclavicular fossa and throat to above the ear, where it breaks off toward the lower jaw and then returns up, below the eye. Another branch splits off behind the ear, which penetrates into the ear and then proceeds to the outer corner of the eye, where it joins the urinary bladder pathway.