Brachial plexus injury arm, lack of muscle control in the arm, hand, or wrist, and lack of feeling or sensation in the arm or hand. Although several mechanisms account for brachial plexus injuries, the most common is nerve compression or stretch. Infants, in particular, may suffer brachial plexus injuries during delivery and these present with typical patterns of weakness, depending on which portion of the brachial plexus is involved. The most severe form of injury is nerve root avulsion, which usually accompanies high-velocity impacts that commonly occur during motor-vehicle collisions or bicycle accidents. Based on the location of the nerve damage, brachial plexus
Marginal artery of the colon artery. This artery is found low in the mesentery, near the root. In the setting of chronic ischemic colitis, both the marginal artery and the meandering mesenteric artery may be enlarged significantly, and may provide significant blood flow to the ischemic colonic segment. Marginal artery of the colon In human anatomy, the marginal artery of the colon, also known as the marginal artery of Drummond and artery of Drummond is an artery that connects the inferior mesenteric artery with the superior mesenteric artery. It is sometimes absent, as an anatomical variant. The artery is named after Sir David Drummond (1852-1932