They could be signs of poor blood circulation – which can cause serious heart and health problems if left untreated. Poor circulation happens when blood, which delivers oxygen and other ...

Like all mammals, it has a circulation system that's made up of two circuits. Its heart pumps oxygen rich blood around its body and back again. And also pumps oxygen poor blood to its lungs and ...

Also, poor blood flow or changes in the shape of your feet or toes may also cause problems. If you have poor blood circulation, your feet will not be able to fight off infections and will take longer ...

Different organisms have different circulation pathways for blood to travel around the body. All animals need blood to be transported to the lungs (or gills in fish) in order to be oxygenated.