Day: March 5, 2019

The world of Harry Potter houses

Almost everyone has heard of the Harry Potter books written by JK Rowling and even if you haven’t read them yourself you have probably seen the films or have children that enjoy the delights of the adventures of Ron, Hermione and Harry. Image Credit As happens in most schools, muggle or wizard based, each of […]

Conduction system of the heart.

The heart pumps blood round the body thanks to its finely tuned system of electrical conduction. This system begins with the sinoatrial node (SA node) which is often referred to as the ‘pacemaker’ of the heart. It consists of a small cluster of specialised cells, located in the right atrium, which are able to depolarise […]