A Polyp Is a Small Tumor with a Stem

question 22

True/False

A polyp is a small tumor with a stem.

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Definitions:

Depolarization

The process in which the resting membrane potential of a cell becomes less negative, making the cell more likely to fire an action potential.

Pacemaker Cells

Specialized heart cells that generate and regulate the heart's rhythm.

Afterload

The force the heart must overcome to pump blood during the contraction phase.

Preload

Preload refers to the degree of stretch of the cardiac ventricles at the end of diastole, just before contraction.