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  1. American Heart Association Journals

    Learn more about Circulation 's collaboration with NEJM 2025 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Executive …

  2. Circulation | Definition, Characteristics, & Function | Britannica

    Oct 11, 2025 · Circulation, the continuous movement of blood throughout the body, driven by the pumping action of the heart. The circulation of the blood links the sites of oxygen utilization …

  3. Circulatory system - Wikipedia

    The circulatory system has two divisions, a systemic circulation or circuit, and a pulmonary circulation or circuit. Some sources use the terms cardiovascular system and vascular system …

  4. How Your Circulatory System Works - Cleveland Clinic

    Sep 4, 2024 · When blood gets oxygen from your lungs and brings it back to your heart, that’s your pulmonary circulation. Systemic circulation describes supplying oxygen-rich blood to your …

  5. Blood Circulation: How It Affects Your Health - Mass General …

    Oct 10, 2025 · How poor circulation affects your health The impact of poor circulation depends on which part of the circulatory system is affected. When blood flow is restricted in the arteries, …

  6. Cardiovascular System: Organs and Functions Diagram

    Oct 19, 2025 · The cardiovascular system includes the heart and blood vessels. This article covers normal and abnormal circulatory system function.

  7. In brief: How does the blood circulatory system work?

    Nov 21, 2023 · The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through …

  8. Pulmonary & Systemic Circulation | Circulatory Anatomy

    The heart pumps oxygenated blood out of the left ventricle and into the aorta to begin systemic circulation. After the blood has supplied cells throughout the body with oxygen and nutrients, it …

  9. Circulatory System: Function, Organs, Diseases - Healthline

    Feb 17, 2020 · Your circulatory or cardiovascular system serves a vital function by delivering oxygen and nutrients to all the organs and tissues of your body. Learn more about how the …

  10. Circulatory system: Structure, function, parts, diseases | Kenhub

    Sep 12, 2023 · Oxygenated blood enters the left atrium from the pulmonary circulation via the pulmonary veins. During diastole, blood passes from the left atrium to the left ventricle through …