The American Academy of CPR and First Aid is accredited by Postgraduate Institute for Medicine who is jointly accredited by the
Accreditation Council for Continuing Medical Education® (ACCME) to provide continuing education for the healthcare team.
Welcome to Adult CPR
Anatomy and PhysiologyAnatomy of the Heart and Lungs
1. HeartThe heart beats continuously to pump blood to all parts of the body. It has four chambers: Right and left atrium and ventricles. Blood flows from the right side of the heart to the left side. The heart is connected to blood vessels (arteries and veins), which combined make up the circulatory system.
2. Lungs
Each person has two lungs underneath the ribcage: One on the left side and one on the right. Its main function is to purify the blood, i.e. from oxygen-poor blood to oxygen-rich blood.
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