Hi
I really in mood today but I'm little worry about my new exam so at first thanks 4 coming and if you came here to learn something I should begin to teach :) I really like this chapter because its comes to our hearts we should know what causes our hearts work in good status I think if we always try to make people happy our hearts working in the kind way and be healthy now we should thinking more about our hearts , where is it? how is our heart building?and something else
at first you can see this photo and imagine your heart


The name of heart cover is pericardiu and its formed by : fibrous pericardium , visceral pericardium & parietal pericardium
The heart wall is formed by : epicardium , myocardi & endocardium