Physiology♥ → Electrical conduction system of the Heart ← ♥
Once upon a time , . . . a little boy went with his grandma to the garden and started playing with His dog ” kinje “ while playing .. kinje climbed a tree and couldnt go back down again he was very scared and shaking : ” Purrr Purrrr ” !! the little boy…
Sep 2, 2010
