The heart receives its own supply of blood from a network of arteries, called the coronary arteries. Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet:
Walton, Ernest Thomas Sinton - Student Encyclopedia (Ages 11 and up) (1903-95), Irish physicist. Born in County Waterford, Ireland, Walton, with Sir John D. Cockcroft, received the 1951 Nobel prize in physics for the development of the first nuclear-particle accelerator.
Lastet opp 1. mar. 2008. Episode 2 of In Search of Giants: Dr Brian Cox takes us on a journey through the history of particle physics. In this episode we learn how J.J. Thomson discovered the fist subatomic particle-the electron. This film is part of a series originally broadcast on Teachers' TV (http://www.teachers.tv/video/23645). The series was made with the support of The Science and Technology Facilities Council (www.scitech.ac.uk).