Examlex
What major problems did European states face in the fourteenth century? How are these problems evident in the history of England, France, and the Holy Roman Empire?
Systemic Circulation
The part of the cardiovascular system which carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.
Epicardium
The outermost layer of the heart's wall, composed of connective tissue and fat, providing protection and contributing to the heart's lubricative fluid.
Four-Chambered
Refers to the structure of the heart, which consists of four chambers: two atria and two ventricles.
Pulmonary Veins
Blood vessels that carry oxygenated blood from the lungs back to the left atrium of the heart.
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