circulatory

this is a kind of basic cartoony picture of the circulatory system.






here is another pic of arteries






lots to memorize once again. but i'm learning much about the human body. its interested to see how blood brings oxygen throughout our bodies.

it starts with the conduction system in the heart.






from the sa node the electrical impulse travels to the av node through the internodal pathway.
then to the bundle of his, followed by the right and left bundle branches. after that the impulse contracts the purkinje cells of the ventricular myocardium. finally the moderator bands relay the message to the papillary muscles.

and the blood flows through the body.