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matter of the heart definition, matter of the heart meaning | English dictionary. matter. 2 substance that occupies space and has mass, as distinguished from substance that is mental, spiritual, etc. n the substance or main theme of a book, discussion, debate, etc.
Anatomy of the Heart Definitions. The heart is the size of your fist and it is located on the left side of your. chest. The heart is divided into four chambers. Right Atrium. The right atrium receives de-oxygenated blood from the body through the. superior vena cava (head and upper body) and inferior vena cava (legs and. lower torso).