The circulatory system is a complex collection of the heart and its many chambers, and the vessels that move blood around the body. At first glance, it can be difficult to grasp. Whether you have an ...

Your circulatory system contains three blood vessel types: arteries, veins, and capillaries. Arteries carry blood from the heart, unlike veins, which carry blood to the heart. According to the ...

Varicose veins, are swollen, bulging, twisted veins visible just beneath the skin that afflict millions of people. Here's ...

Dr. Thoralf Sundt answers the question: 'Bypass -- Vessels From Legs Or Chest?' — -- Question: How does a surgeon decide whether to use veins from the legs or arteries from the chest to do bypass ...

Peripheral artery disease (PAD) is a type of peripheral vascular disease (PVD). PVD involves various blood vessels outside the brain and heart. PAD refers to narrowed or blocked blood vessels that ...

A leading cardiologist breaks down the dangers and differences between spider veins and varicose veins, including treatment options. Don’t get it twisted. While spider and varicose veins are a source ...

Blood is red to the naked eye. Under a microscope, it depends. This isn't because it isn't really red, but rather because its redness is a macroscopic feature. Human blood is red because hemoglobin, ...

Acute venous embolism and thrombosis are both conditions that disrupt blood flow. Treatment may involve medications or surgery. Blood clot formation is a protective mechanism that helps prevent excess ...

Retinal vascular events are perceived to be related to various cardiovascular complications. We conducted a systematic review to assess the relationship between retinal artery/vein occlusions (RAO/RVO ...