1 The song's tempo is 96BPM. 2  You multiply by four, because 60 seconds divided by 15 seconds = 4. 3  To increase accuracy, count beats for longer periods of time and calculate the rate accordingly.
The study of the properties of the blood flow is called hemorheology. The circulatory system is often seen to comprise two separate systems: the cardiovascular system, which distributes blood, and the lymphatic system, which circulates lymph. The passage of lymph for example takes much longer than that of blood. Blood is a fluid consisting of plasma, red blood cells, white blood cells, and platelets that is circulated by the heart through the vertebrate vascular system, carrying oxygen and nutrients to and waste materials away from all body tissues.
The lymphatic system maintains fluid levels in the body. Bacteria and other microbes are taken up by the lymph and delivered to the lymph nodes for destruction. The spleen and thymus are organs that filter the blood. 1  The lymphatic system is a network of tubes throughout the body that drains fluid (called lymph) from tissues and empties it back into the bloodstream. The main roles of the lymphatic system include managing the fluid levels in the body, filtering out bacteria, and housing types of white blood cells.