Cameron’s PROJECT is the
Circulation System Of The Human Body:
The circulation system consists of the heart, blood vessels, and the approximately 5 liters of blood that the blood vessels transport. Responsible for transporting oxygen, nutrients, hormones, and cellular waste products throughout the body, the cardiovascular system is powered by the body’s hardest-working organ the heart, which is only about the size of a closed fist. Even at rest, the average heart easily pumps over 5 liters of blood throughout the body every minute.
The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle
It is known that fluctuations in intrathoracic pressure can produce blood flow during cardiopulmonary resuscitation. Thus, efforts have been made to increase intrathoracic pressure to levels above those obtained conventionally in order to produce increased blood flow. For example, high-pressure ventilation has been used with simultaneous mechanical sternal compression or circumferential thoracic compression with an inflatable vest, to increase the levels of intrathoracic pressure generated. However, such techniques have required endotracheal intubation and this invasive technique and the simultaneous high-pressure ventilation have presented high risks to the patient and are cumbersome and time consuming and thus have limited usefulness.