The femoral artery is susceptible to peripheral arterial disease. The circulatory anastomosis is further divided into arterial and venous anastomosis. In patients with pulmonary arterial hypertension eNOS levels are reduced. One important mechanism is a thermal exchange between testicular arterial and venous blood streams. Venous drainage mostly parallels that of the arterial supply. Moreover, these biochemical parameters strongly correlated to the severity of pulmonary arterial hypertension. The human arterial and venous systems develop from different areas in the embryo. An aneurysm is one of the most frequent causes of acute arterial ischemia. The distribution of atherosclerotic plaques in a part of arterial endothelium is inhomogeneous. High blood pressure is a factor in causing arterial damage. This phenomenon may result in the overestimation of arterial stenosis. More specifically, it is oxygen deficiency in arterial blood. Symptoms of DCS and arterial gas embolism can be virtually indistinguishable. The rectus abdominis has many sources of arterial blood supply. A sample of arterial blood is collected for this test.