Apoptosis: Cell Suicide
Apoptosis is a pathway of programmed cell death. It can occur in a either a normal physiological state or a pathologic state.
Dec 27, 2011
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Michelle Parker
How a Cataract Affects the Eye Lens
Eye cataracts are common causes of loss of vision in the elderly. Learn how a cataract affects the eye lens.
Jul 31, 2011
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Lakshmi Ananth
The Action Potential: Signals In The Brain
An action potential is a brief reversal in electrical charge across a membrane that travels down the axon of a neuron.
May 18, 2011
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Katherine Dowling
The Resting Potential of a Neuron
When a neuron is not generating an action potential, it is called a resting neuron. The resting membrane potential is acheived by ion pumps and ion channels
May 18, 2011
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Katherine Dowling
Important Characteristics of Epithelial Cells
Learn the most important characteristics of epithelial tissues including shape, location in the body and functions.
May 5, 2011
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Kristin Dorman
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Jill Browne, online writer and editor, loves collaborating with writers.