Households with lawns or gardens must factor in the amount of water sprinkled on grass, flowers and vegetables. Outdoor watering uses 5 to 10 gallons per minute. So in 10 or 20 minutes, you may use 100 gallons â the amount industry experts estimate is used by an average person each day for all personal water needs!
Cardiac conduction is the driving force behind the cardiac cycle. This cycle is the sequence of events that occur when the heart beats. During the diastole phase of the cardiac cycle, the atria and ventricles are relaxed and blood flows into the atria and ventricles. In the systole phase, the ventricles contract sending blood to the rest of the body.
The conducting system provides the heart its automatic rhythmic beat. For the heart to pump efficiently and the systemic and pulmonary circulations to operate in synchrony, the events in the cardiac cycle must be coordinated. Schematic illustration of the cardiac conduction system. See also Heart Anatomy, Aortic Valve Anatomy, Mitral Valve Anatomy, Pulmonic Valve Anatomy, Tricuspid Valve Anatomy, Anatomy of the Nerves of the Heart, and Anatomy of the Autonomic Nervous System.