In the United States, middle schools and high schools often offer choir as a class or activity for students. Some choirs participate in competitions. One kind of choir popular in high schools is show choir. Middle school and high school is an important time, as it is when students' voices are changing.
Veins and arteries. Vascular disease is a class of diseases of the blood vessels â the arteries and veins of the circulatory system of the body. It is a subgroup of cardiovascular disease. Disorders in this vast network of blood vessels, can cause a range of health problems which can be severe or prove fatal.
Peripheral Vascular Disease (PVD; Peripheral Artery Disease [PAD]). Peripheral vascular disease (PVD) is a problem with poor blood flow. It affects blood vessels outside of the heart and brain and gets worse over time.Parts of the body, like the brain, heart, arms, or legs, may not get enough blood. The legs and feet are most commonly affected.VD is often found in people with problems with the arteries that supply blood to the heart (coronary artery disease). That is because atherosclerosis, which causes coronary artery disease, affects arteries throughout the body. Atherosclerosis is the buildup of plaque on the walls of the arteries.