Cardiovascular diseases affect the heart and blood vessels. There are two main types of stroke caused by lack of blood flow to the brain due to blood clots or plaque buildup in arteries. Hyperlipidemia is a high level of fats in the blood that increases risk of diseases, while excess body fat also increases health risks. Diabetes occurs when the body does not produce insulin or produces very little. The muscular system contains muscles with characteristics like excitability, contractility, extensibility, and elasticity.
