The Rise of Kâ12 Blended Learning | 133 NSTITUTE NNOSIGHT represents a ranking of 1 st in Santa Clara County and 5 th in California when compared to similar schools with at least 70 percent low-income students.
The heart has four chambers, two upper atria, the receiving chambers, and two lower ventricles, the discharging chambers. The atria open into the ventricles via the atrioventricular valves, present in the atrioventricular septum. This distinction is visible also on the surface of the heart as the coronary sulcus.
The human heart is divided into 4 chambers or parts: the two ventricles (lower parts) and two atria (upper parts). The heart plays an important role in blood circulation, by pumping deoxygenated blood into the lungs, and supplying oxygenated blood from the lungs to other parts of the body.