Atherosclerosis, or hardening of the arteries, is a condition in which plaque builds up inside the arteries. Plaque is made of cholesterol, fatty substances, cellular waste products, calcium and fibrin (a clotting material in the blood).Atherosclerosis is a type of arteriosclerosis.any scientists believe plaque begins to form because the inner lining of the artery, called the endothelium, becomes damaged. Three possible causes of damage to the arterial wall are: 1  Elevated levels of cholesterol and triglycerides in the blood. 2  High blood pressure.
The metric unit is degrees Celsius and the SI fundamental unit is the Kelvin. The degree Celsius, which is 1/100 of the difference between the freezing point and boiling point of pure water at sea level.Each Â°C equals 1.8 Â°F (Fahrenheit). The metric unit for temperature is the degree Kelvin.elsius or Kelvin The metric unit for temperature is the Kelvin (symbol: K), which is defined as 1/273.16 of the temperature difference between absolute zero and the triple p â¦ oint of water.
SI Units: Temperature. The Kelvin (K) is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water.The temperature 0 K is commonly referred to as absolute zero.. On the widely used Celsius temperature scale, water freezes at 0 Â°C and boils at about 100 Â°C.One Celsius degree is an interval of 1 K, and zero degrees Celsius if 273.15 K. An interval of one Celsius degree corresponds to an interval of 1.8 Fahrenheit degrees on the Fahrenheit temperature scale.he Kelvin (K) is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water. The temperature 0 K is commonly referred to as absolute zero..