Most Popular. 1  GCHQ challenges you to crack codes for charity with its first ever puzzle book. 2  A Christmas card with a cryptographic twist for charity. 3  Foreign Secretary appoints new Director GCHQ.  Applications open for GCHQâs Cyber Summer 1  Schools. GCHQ Cheltenham.
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.
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.