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.
1 Names and Functions of the Heart's Valves A healthy heart has four blood flow chambers, two on each side. 2  The upper chambers, or atria, act as receiving chambers for blood returning to the heart. 3  The lower chambers, â¦. 4  The Five Major Parts of the Brain At its most basic, the brain controls the body.