31. The renowned British obstetrician William Smellie is credited with the first medical description of an obstetric brachial plexus palsy. 32. Once at the pyramids, the Brachial Plexus and stimulates the Pronator Teres to contract causing the hand to pronate. 33. Nervous plexus injuries create the more signs and symptoms from sensory-motor problems ( such as brachial plexus injuries ). 34. For example, In 1946, F . Paul Ansbro was the first to describe a continuous brachial plexus block technique. 35. In 1977, Selander described a technique for continuous brachial plexus block using an intravenous catheter secured in the axilla. 36. Thus, the phrenic nerve receives innervation from parts of both the cervical plexus and the brachial plexus of nerves. 37. Behind, it lies on the lowest trunk of the brachial plexus , which intervenes between it and the Scalenus medius. 38. Brachial plexus injuries can cause paralysis to various regions in the arm, forearm, and hand depending on the severed nerves.39. Similar symptoms are common with anterior shoulder dislocation, humeral neck fracture, brachial plexus injury and thoracic outlet and inlet syndrome. 40. The second part of the axillary artery is the reference for the locational descriptions of the cords in the brachial plexus .
