France and the United Kingdom agreed to support Poland and in August of 1939, German troops began to gather on the Polish border. By September 1st, Germany launched an invasion of Poland.
The brachial plexus is a network of nerves that originate in the neck region and branch off to form most of the other nerves that control movement and sensation in the upper limbs, including the shoulder, arm, forearm, and hand.
the network of nerves formed by the ventral primary divisions of the first four cervical nerves. Each nerve, except the first, divides into the superior branch and the inferior branch, and both branches unite to form three loops. The plexus is located opposite the cranial aspect of the first four cervical vertebrae.occygeal plexus a nerve plexus formed by the ventral branches of the coccygeal and fifth sacral nerve and by a communication from the fourth sacral nerve, giving off the anococcygeal nerves. cystic plexus a nerve plexus near the gallbladder.