Cell depolarization, or membrane depolarization, is a process that shifts the electrical charge distribution so that the cell is less negatively charged compared to the environment.

Learn about action potential and how to draw an action potential graph with depolarization and repolarization points. Understand what happens during depolarization.

Get an overview of cell depolarization in our informative video lesson. Learn its properties and how it differs from repolarization, then take a quiz to review.

Learn about the neuron diagram, structure, and function. Discover and discuss the meaning of dendrites, axon, membrane polarization, membrane depolarization, and synapses.

Learn about the relative refractory period in a neuron. Understand the steps of generating an action potential and why the refractory period is important.

In the cardiac cycle, atrial contraction is followed by ventricular contraction. Answer and Explanation: 1 The correct answer is d. Ventricular depolarization occurs after atrial …

Understand what depolarization is. Explore the meaning of cell depolarization and repolarization, and also see the difference between depolarization and repolarization.

Cardiac muscle has to contract to pump blood throughout the vascular system. This lesson covers the dynamics and physiological processes regulating cardiomyocyte contraction and the ion …

Explore the different types of summation in biology. Learn the definition of summation. Discover the differences between spatial summation and temporal summation.

An electrocardiogram (ECG) records the flow of electrical current on three distinct waves. Explore the purpose of an ECG, the three wave types, and...