Credit Joshua Lott for The New York Times. 1  Three years ago, a labor leader named Marty Beil was one of the loudest opponents of Gov. Scott Walkerâs âbudget repair bill,â a proposal that brought tens of thousands of protesters out to the Wisconsin State Capitol in Madison in frigid February weather.
epitrochlear. (anatomy). Of or pertaining to a lymph node that lies above the trochlea of the elbow joint. 1  Facebook. 2  Twitter.
The sinoatrial node (SA node) is a group of cells positioned on the wall of the right atrium, near the entrance of the superior vena cava. These cells are modified cardiomyocytes. They possess rudimentary contractile filaments, but contract relatively weakly compared to the cardiac contractile cells.hese cells form the atrioventricular node (or AV node), which is an area between the left atrium and the right ventricle within the atrial septum, will take over the pacemaker responsibility. The cells of the AV node normally discharge at about 40-60 beats per minute, and are called the secondary pacemaker.