Self Taught? What does that mean? So I was just read a thread where programmers who were &quot;self taught&quot; were lavished with all sorts of insults and accused of heinous syntactical and documentary crimes. So what what I need to know is what is &quot;self taught&quot;? If you read a book on programming are you still self...
The heart is the key organ in the circulatory system. As a hollow, muscular pump, its main function is to propel blood throughout the body. It usually beats from 60 to 100 times per minute, but can go much faster when necessary.
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.