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The heart – the main organ of the circulatory system

General structure of the circulatory system and location of the heart

Heart structure

Structure of the heart wall

Structure of the heart

Structure of the heart and blood flow through the heart

Phases of the cardiac cycle

Phases of the cardiac cycle

Cardiac cycle

Heart sounds and pulse

Heart sounds and pulse rate

Conducting system of the heart

Automatism of the heart

Vessels of the circulatory system

Pulmonary and systemic circulations

Pulmonary and systemic circulations

Coronary circulation

Blood flow in the human circulatory system