- Sinoatrial Node — 2020-08-15 18:08:00
…& Martin Flack 1907 === ~- [[Medical]]:[[1900s]] **Martin Flack**, British physiologist, discovered the bodys' natural pacemaker that is responsible for the initiation of the heartbeat in **1907** with his mentor, Scottish anatomist, **Sir Arthur K…
…orce . He was appointed a Commander of the Order of the British Empire in the 1919 New Year Honours . {{Tag ids="Heart pacemaker SA node "}} …