Anatomy 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 💡 Explanation In angina pectoris, the pain radiating down the left arm is mediated by increased activity in afferent (sensory) fibres contained in the ✓ Correct Answer: D. Thoracic splanchnic nerve