Septic arthritis is a rather rare but important disease characterized by inflammation of a synovial membrane with purulent effusion into the joint capsule, usually due to bacterial infection. It typically affects monoarticular joints.
Scientists estimate the volume of blood in a human body to be approximately 7 percent of body weight. An average adult body with a weight of 150 to 180 pounds will contain approximately 4.7 to 5.5 liters (1.2 to 1.5 gallons) of blood. An average child with a body weight of 80 pounds will have approximately half the amount of blood as an adult. Blood carries out many critical functions in the body.
An adult heart is about the size of two intertwined fists. Each day an average heart beats 100,000 times and pumps 2,000 gallons of blood. During a lifetime, the heart will pump 1 million barrels of blood. A heart will beat 2.5 billion times in an 80-year life. The body contains 60,000 miles of blood vessels. Every year since 1900 (with the exception of 1918) heart disease has killed more Americans than any other disease.