Episode 47 covers the electrical activity of the heart as well as explains the ECG. The heart is unique that it generates and conducts its own electrical signals without a need for motor neurons. For an in-depth look at the human heart and the rest of the human body, check out A&P Digital Suite for over 150 A&P tutor videos I've made, study guides, and comprehensive anatomy and physiology lab simulations. Feel free to email me at [email protected] and ask me questions. I just may answer them on the show.