Anatomy General 1d605184 In angina pectoris, the pain radiating down the left arm is mediated by increased activity in afferent (sensory) fibres contained in the A Carotid branch of the glossopharyngeal nerve B Phrenic nerve C Vagus nerve & recurrent laryngeal nerve D Thoracic splanchnic nerve High-Yield Explanation D. i.e. Thoracic splanchnic nerves