Examlex
It is the interaction of white sunlight with our atmosphere that creates the numerous optical phenomena that take place in the sky.
Ventricular Contraction
The phase of the cardiac cycle in which the ventricles of the heart contract, pumping blood out of the chambers.
Apex
The top or highest part of something, such as the pointed end of the heart that points downward to the left.
Base
A substance that can accept protons or donate a pair of electrons to form a bond, usually raising the pH of a solution when dissolved in water.
Great Arteries
The major arteries, such as the aorta and pulmonary artery, that carry blood away from the heart to the body or lungs.
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