The upper chambers of the heart are referred to as
- The upper chambers of the heart are called as
- The two upper chambers of the heart are called as
- The upper chambers of the heart are referred to as the atria
- The upper chambers of the heart are known as
- The upper two chambers of the heart are known as
- The upper chambers of the human heart are known as
- The upper chambers of the heart are known as the quizlet
- The upper chambers of the heart include the
- The upper chamber of the heart is called
- The upper chamber of the heart is