Our cardiovascular system is an example of a demand-driven supply-and-demand system in which the demand of individual organs for blood flow determines the supply, or output, from the heart. This ...

With aging there are changes in the cardiovascular system, which result in alterations in cardiovascular physiology. The changes in cardiovascular physiology must be differentiated from the effects of ...

Coronary arteries are a vital part of the human heart, providing it with oxygen-rich blood so that it can work. By comparing the hearts of mammals, birds, reptiles, fish and frogs, a ...

Scientists have a new understanding of the protective effects of caffeine on the cardiovascular system. While its stimulant effects have long been characterized, a team of Canadian researchers have ...

You already know that keeping your heart in tip-top shape is a key part of maintaining your cardiovascular health—but your cardiovascular system goes beyond that beating organ in your chest. After all ...

'The key with HIIT is to exercise at a high enough intensity to influence the push of your heart, and the stretch of your blood vessels. True high-intensity intervals are three minutes or less, and ...