The electrical conduction system of the heart
The heart generates the electrical impulses necessary for its own operation. The graphic representation of the electrical activity of the heart is the electrocardiogram.
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The cause of a heart attack is the blockage of a coronary artery. It is one the most common causes of death.
Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.
This scene presents the location, anatomy and functioning of the central organ of the human circulatory system.
Human blood consists of blood cells and plasma.
This animation explains active and passive transport processes occurring through cell membranes
The three types of muscle found in the human body are the smooth, the striated and the cardiac muscle.
This animation demonstrates the most important equipment of ambulance cars.
Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.