Quantcast
atla.doereport.comatla.doereport.comBiology: The Cell: 05: Cell Transport - Passive Transport - Medical Animation
Biology: The Cell: 05: Cell Transport - Passive Transport - Medical Animation



or
Search Language
Browse
Medical Illustrations
Medical Exhibits
Medical Animations
Medical Animation Titles
Medical Encyclopedia
Custom Interactive
Most Recent Uploads
Body Systems/Regions
Anatomy & Physiology
Cells & Tissues
Abdomen
Back and Spine
Foot and Ankle
Hand and Wrist
Head and Neck
Hip
Knee
Shoulder
Thorax
Medical Specialties
Anesthesiology
Cancer
Cardiology
Dentistry
Emergency Medicine
Gastroenterology
Infectious Diseases
Neurology/Neurosurgery
Nursing Home
Ob/Gyn
Orthopedics
Pathology
Pediatrics
Personal Injury
Plastic Surgery
Psychiatry
Radiology
Surgery
Urology/Nephrology
Account
Administrator Login
 
5/31/20
Biology: The Cell: 05: Cell Transport - Passive Transport - 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 animation for other purposes, click here.

If animation does not play, download and install the latest free Flash Player plugin.
More Like ThisAdd To Lightbox NSV15008 Enlarge Share
Ready to Purchase?

$999.00

Order by phone: (800) 338-5954
Item #NSV15008Source #1136

Biology: The Cell: 05: Cell Transport - Passive Transport - Medical Animation
MEDICAL ANIMATION TRANSCRIPT:
In this video, we will be discussing passive transport. Passive transport is when particles move through the cell membrane from an area of higher concentration to lower concentration without the use of energy, also described as movement along the concentration gradient. What are the types of passive transport? They are diffusion, osmosis, and facilitated diffusion. We'll describe diffusion first using the solution in this container. A solution is a liquid with something dissolved in it. The aqua color represents the solvent, meaning the liquid part of the solution. The yellow particles represent the dissolved substance called the solute. The structure in the middle of the container represents a semi-permeable cell membrane, a barrier through which only certain sized particles can pass freely. It's important to note that although diffusion often occurs across the cell membrane, diffusion can happen with or without a semi-permeable membrane. Right now, there is more solute on the left than there is on the right. Because solute particles are able to pass through the semi-permeable membrane, they are going to naturally move from an area of high concentration to an area of low concentration. They will continue to do this until both sides of the container have about equal numbers of solute particles. This is called achieving a state of equilibrium. Let's review what we've covered so far. Diffusion is when particles move from an area of high concentration to low concentration. This just happens. It's a natural process that doesn't use any energy. Here's an example of diffusion happening without a semi-permeable membrane. If you spray air freshener in a room, people near you smell it right away. But after a short time, depending on the size of the room, people farther away will also begin to smell it. This is because the little scented molecules are trying to achieve equilibrium by spreading evenly throughout the room. Remember, diffusion is a natural process, like a ball rolling down a hill. The ball's movement is automatic and doesn't require any energy. Osmosis is diffusion that happens with water molecules. Let's look at another container in which the solvent is water but the solute particles are larger. The membrane in this container has openings that are too small for the solute to move through, but water can pass through the membrane freely. This time, we'll focus on the concentration gradient of the water rather than the solute particles. Although the large solute particles can't pass through the membrane, the water molecules are small enough to pass through. The water moves freely from its area of high concentration to low concentration until equilibrium is reached. Equilibrium means that the proportion of water to solute particles is about the same on both sides of the membrane. In the cell, osmosis means diffusion of water through the cell membrane. Water can enter or leave the cell through the membrane until the cell achieves a state of equilibrium with its surroundings. So like diffusion, osmosis is passive. No energy is required. It just happens automatically. Facilitated diffusion is a type of passive transport in which molecules diffuse through specialized protein channels in the cell membrane. The protein channels work like special ports or tunnels that allow these substances in or out of the cell. Facilitated diffusion is also when particles move from high concentration to low concentration. How do you know that? From the word "diffusion." Facilitated diffusion works naturally without added energy, just like the diffusion example we discussed earlier. But facilitated diffusion generally happens with particles a bit larger than those that can seep through the cell membrane's phospholipid layers. So they move in or out of the cell along the concentration gradient in a specialized way through protein channels. In summary, passive transport is a natural process that doesn't require the cell to expend any energy. The types of passive transport are diffusion, osmosis, and facilitated diffusion. ♪ [music] ♪

YOU MAY ALSO WANT TO REVIEW THESE ITEMS:
Childbirth Delivery with Vacuum Extractor
Childbirth Delivery with Vacuum Extractor - DW00006
Medical Illustration
Add to my lightbox
Find More Like This
Left Ankle Trimalleolar Ankle Fractures with Subsequent Surgical Fixation
Left Ankle Trimalleolar Ankle Fractures with Subsequent Surgical Fixation - exh38538
Medical Exhibit
Add to my lightbox
Find More Like This
ACL Reconstruction Surgery
ACL Reconstruction Surgery - exh46142b
Medical Exhibit
Add to my lightbox
Find More Like This
Biology: The Cell: 06: Cell Transport - Active Transport
Biology: The Cell: 06: Cell Transport - Active Transport - NSV15009
Medical Animation
Add to my lightbox
Find More Like This
Biology: The Cell: 07: Cell Transport - Cell Transport and Solutions
Biology: The Cell: 07: Cell Transport - Cell Transport and Solutions - NSV15018
Medical Animation
Add to my lightbox
Find More Like This
Biology: The Cell: 04: Cell Transport - Overview of Cell Transport
Biology: The Cell: 04: Cell Transport - Overview of Cell Transport - NSV15007
Medical Animation
Add to my lightbox
Find More Like This
What attorneys say about MLA and The Doe Report:
"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

"We are extremely pleased with the quality of the medical exhibits and the timely manner in which they were provided. I will certainly recommend your company to my business associates who could benefit from your services. Please tell Brian Wilson [Director of Content Development, Senior Medical Illustrator] that he did an exceptional job on these exhibits."

K. Henderson
Dunaway and Associates
Anderson, SC

"Thank you for the splendid medical-legal art work you did for us in the case of a young girl who was blinded by a bb pellet. As a result of your graphic illustrations of this tragic injury, we were able to persuade the insurance company to increase their initial offer of $75,000.00 to $475,000.00, just short of their policy limits.

We simply wanted you to know how pleased we were with your work which, to repeat, was of superlative character, and to let you know that we would be more than willing to serve as a reference in case you ever need one. Many thanks for an extraordinary and dramatic depiction of a very serious injury which clearly "catapulted" the insurance company's offer to a "full and fair" amount to settle this case."

Philip C. Coulter
Coulter &Coulter
Roanoke, VA

"I wanted to take some time out to let you know what a wonderful job you did with the 'collapsed lung/fractured rib' illustrations. They were both detailed and accurate. My medical expert was comfortable working with them and he spent at least an hour explaining to the jury the anatomy of the lungs, the ribs and the injuries depicted in the illustrations. Needless to say, the jury was riveted to the doctor during his testimony.

The jury returned a verdict for $800,000.00 and I'm sure we would not have done so well if not for the visualizations we were able to put forth with your assistance. Lastly, my special thanks to Alice [Senior Medical Illustrator] who stayed late on Friday night and patiently dealt with my last minute revisions."

Daniel J. Costello
Proner & Proner
New York, NY

Medical Legal Blog |Find a Lawyer | Hospital Marketing