(800)222-2114. Claims: (877)224-5677. American Commerce Insurance Company is part of the MAPFRE Insurance group. They originated in Massachusetts as The Commerce Group, Inc. (CGI), founded in the town of Webster, Massachusetts in 1972. They are the largest private passenger automobile insurer, homeownersâ insurer and commercial automobile insurer in Massachusetts.
FREE subscriptions for doctors and students... You have 3 open access pages. The oblique fissures divide the lung on both sides into upper and lower lobes. The upper lobe on the right is further subdivided by the horizontal fissure into definitive upper lobe - above the fissure - and middle lobe - below the fissure. The fissures extend from the surface of the lung to its hilum. Along this route, visceral pleura apposes visceral pleura.
(December 2009). In anatomy, a fissure (Latin fissura, plural fissurae) is a groove, natural division, deep furrow, elongated cleft, or tear in various parts of the body also generally called a sulcus, or in the brain a sulcus. Longitudinal fissure: found in the lower surface of the liver, also a fissure that separates the right and left hemispheres of the cerebrum. 2  Portal fissure: found in the under-surface of the liver. 3  Umbilical fissure: found in front of the liver.