Define a Relation

question 63

Essay

Define a relation.

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Definitions:

Semilunar Valves

Heart valves located at the exits of the right and left ventricles, preventing backflow of blood into the ventricles after contraction; they include the aortic and pulmonary valves.

Stethoscope

A medical instrument used for listening to the internal sounds of an organism, such as heart and lung sounds.

Terminal Branch

The terminal branch is the end part of a nerve or a blood vessel that does not continue further or branch out again.