Hi. In this module, we will discuss the cardiovascular system and cardiovascular emergencies. Did you know that your heart, which is roughly the size of both of your hands clasped together, beats approximately 100,000 times each day, that it pumps 1.5 gallons of blood each minute, and 2,000 gallons of blood each day, that your heart will beat approximately two and half billion times during a lifetime? Are you impressed? You should be because your heart is an incredible automated, efficient pumping machine. It should then come as no surprise that if we do not properly care for our heart, parts of the machine can fail. Let's talk a little more about what I mean exactly. In this module, it will be important to be already familiar with your cardiovascular anatomy. Are you having trouble remembering? Please refer back to course one anatomy lesson to review. See the list in the extra resources section of this course to make sure you can identify all of the parts of the circulatory system listed. You will need to be able to identify the heart, the chambers of the heart, the valves, which separate each of the chambers, and these electrical and the electrical nodes in these chambers. You will want to commit to memory the flow of blood from right to left, from venous circulation through systemic arterial circulation, including the names of the various chambers and vessels through which blood flows in the circuit. Blood is red; cyanosis is blue. I get tachycardia when I think of-. Okay. Let's just do it