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Nerve Impulse - Medical Animation

 

This animation may only be used in support of a single legal proceeding and for no other purpose. Read our License Agreement for details. To license this image for other purposes, click here.

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Nerve Impulse - Medical Animation
MEDICAL ANIMATION TRANSCRIPT: A typical neuron consists of a cell body, plasma membrane extensions called dendrites, an elongated fiber known as an axon, and an axon hillock, the trigger zone that releases a nerve impulse. The axon hillock maintains an excitation limit, or threshold, which determines whether or not a neuron will generate a nerve impulse. A nerve impulse is an electrical signal conducted by a neuron, causing a response in another neuron or target cell. When a neuron is at rest, its membrane is polarized because there are more positive ions outside the cell and more negative ions inside the cell, which creates a charge difference across the membrane. Active transport mechanisms called sodium-potassium pumps carry more sodium and less potassium ions across the membrane to maintain this charged difference. Even in a resting neuron, there is the potential for the charged difference to create an electrical current. This is called a resting membrane potential. When an electrical current flows through a dendrite, this is called a local membrane potential. When a dendrite detects a stimulus, a sodium channel in its plasma membrane opens and lets sodium into the neuron. This influx of positive ions reverses the charge across a particular section of the membrane in a process called depolarization. To repolarize the membrane, potassium channels open and release potassium out of the neuron. Nearby, a sodium-potassium pump transports excess sodium amount and brings potassium in, which restores the resting membrane potential. The flow of reversing charges along the dendrite's membrane produces a wavelike electrical current toward the neuron's trigger zone. If the strength of the current meets or exceeds the threshold at the trigger zone, an electrical signal called an action potential or nerve impulse will occur. In a nerve impulse, the trigger zone sends an electrical signal down the axon toward the space between neurons called a synapse or to a target cell membrane. ♪ [music] ♪

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What attorneys say about MLA and The Doe Report:
"For modern audiences, it is absolutely essential to use medical demonstrative evidence to convey the severity and extent of physical injuries to a jury. Your company's high quality illustrations of our client's discectomy surgery, combined with strong expert testimony, allowed the jury to fully appreciate the significance of our client's injuries.

We are very pleased with a verdict exceeding $297,000.00, far in excess of the $20,000.00 initially offered by the defendant. The medical demonstrative evidence provided by Medical Legal Art was an asset we could not have afforded to have been without."

Todd J. Kenyon
Attorney at Law
Minneapolis, MN

"I just wanted to let you know that after several days on trial, I settled [my client's] construction accident case for $4.5 million. Immediately after the jury was discharged, I spoke with several jurors who told me that they really appreciated the medical illustrations for their clarity in dealing with [my client's] devastating injuries. They also expressed their gratitude in being able to read from a distance all of the notations without difficulty. Obviously, the boards were visually persuasive. I am certain that this contributed to our successful result."

Michael Gunzburg, Esq.
Attorney at Law.
New York, NY

"It is with great enthusiasm that I recommend Medical Legal Art. We have used their services for three years and always found their professionalism, quality of work, and timely attention to detail to exceed our expectations. We recently settled two complicated catastrophic injury cases. One medical malpractice case involving a spinal abscess settled for 3.75 million and the other involving injuries related to a motor vehicle accident settled for 6.9 million. We consider the artwork provided by MLA to have been invaluable in helping us to successfully conclude these cases.

I highly recommend MLA to anyone seeking high quality, detailed medical legal artwork."

E. Marcus Davis, Esq.
Davis Zipperman, Krischenbaum & Lotito
Atlanta, GA
www.emarcusdavis.com

"It is my experience that it's much more effective to show a jury what happened than simply to tell a jury what happened. In this day and age where people are used to getting information visually, through television and other visual media, I would be at a disadvantage using only words.

I teach a Litigation Process class at the University of Baltimore Law Schooland use [Medical Legal Art's] animation in my class. Students always saythat they never really understood what happened to [to my client] until theysaw the animation.

Animations are powerful communication tools that should be used wheneverpossible to persuade juries."

Andrew G. Slutkin
Snyder Slutkin & Kopec
Baltimore, MD












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