3) We can observe how the recurrent nerve, climbing upwards between the trachea and the oesophagus, gives small branches to these two organs and how, at the inferior margin of the cricoid cartilage, divides into an anterior branch for the lateral muscles of the larynx (to show this the right lamina of the thyroid cartilage has been cut and turned forwards) and a posterior one which innervates the posterior laryngeal muscles and then joins the inner branch of superior laryngeal nerve (clearly visible near the greater cornu of the hyoid bone) forming the ansa Galeni.