Transport System from Stephen Taylor – thank you Mr Taylor (of iBiology).
Fantastic animated tutorials from McGraw Hill Education – the cardiac cycle, mechanical events of the cardiac cycle (pressure & volume changes etc) & the conducting system of the heart.
An animated, narrated tutorial on measuring blood pressure (from Sinauer Associates).
Click on ‘Cholesterol’ to see an Interactive Animation from Wiley on Cholesterol & Heart Disease and here is an excellent lesson from TED-Ed on on what is fat?