The notes included below are grouped by grade level. Describe the effect exercise has on heart rate. Teachers are encouraged to visit the Heart and Stroke Foundation of Canada 's website for additional information and activities. Each province in Canada has its own branch of the Heart and Stroke Foundation. The heart is a muscle that pumps blood throughout the body.
Blood is forced through the arteries in waves called a pulse.
The blood transports oxygen and nutrients to all cells of the body. The oxygen is used by all cells to produce energy. Background on the circulatory system. Byron must have a constant supply of oxygen to all of his cells. When he is actually climbing, his heart must be able to pump more blood to his muscles.