Human Circulatory SystemThe human circulatory system functions to transport blood and oxygen from the lungs to the various tissues of the body .… In biology
Heart Disease , Symptoms and TreatmentCORONARY ARTERY DISEASE Coronary artery disease (CAD) is the most common type of heart disease. CAD happens wh… In biology
Hormones in AnimalsChemical substances are released directly into the nearby blood lymph vessels , from where they are carried to various … In biology