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.
Introduction to the Heart The heart is a muscular organ that pumps circulatory fluid â blood or hemolymph â throughout the body. In Arthropods and Annelids, the simplified âheartâ is just a thicker, more muscular part of the circulatory system, with no compartments or valves.