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.
Circulatory System. The heart is a hollow, muscular organ that maintains blood circulation throughout the body. Learn how the circulatory system-your heart, blood vessels and blood-bring nutrients to the body.our body is pretty amazing. At any given point you have many biological processes going on -- circulatory, digestive, brain & central nervous systems and more. Learn about these body systems as well as the eye, ears, nose and throat.