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A blood clot that forms in the deep veins of the lower limbs can cause a fatal pulmonary embolism if they enter the lungs.
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Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.
The heart is the central pump of the cardiovascular system beating several billion times over our lifetime.
The cause of a heart attack is the blockage of a coronary artery. It is one the most common causes of death.
This animation introduces the most important systems of the human body.
This animation introduces the most important organ systems of the human body.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
Human blood consists of blood cells and plasma.
The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...
Smoking severely damages the respiratory system, it may cause COPD or lung cancer.