Why do the UK and portugal have the same time zone but france and spain have different ones?t is because Portugal is a long way West. Originally Portugal adopted CET, but changed it to be the same as UK time in the 1990's Peter. Source(s): Business with Portugal / UK / Europe. MPPRH Â· 7 years ago.
The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system. The right atrium receives blood from the veins and pumps it to the right ventricle.
Video: Heart and circulatory system. Your heart is a pump. It's a muscular organ about the size of your fist and located slightly left of center in your chest. Your heart is divided into the right and the left side. The division protects oxygen-rich blood from mixing with oxygen-poor blood. Together, your heart and blood vessels comprise your cardiovascular system, which circulates blood and oxygen around your body. Your heart pumps about 5 quarts of blood every minute.