The membrane potential of a neuron is closest to the equilibrium potential of the neuron’s leakiest ion (at rest, this is K+)

Several videos relating to the heart from my YouTube page

Blood flow through the heart: https://youtu.be/VfYoTulf6II

1 minute heart: https://youtu.be/maAVv72xass

Surface and internal structures of the heart: https://youtu.be/8PiEk4jp3p4

Coronary circulation: https://youtu.be/l1vApSJgF4M

Interactive: Heart Labeling of Anterior and Posterior Views

https://www.purposegames.com/game/anterior-and-posterior-view-of-heart-uncut

https://www.purposegames.com/game/the-blood-flow-through-the-heart-game