Quantcast
Biology: The Cell: 03: Structure - Structure of the Cell Membrane - Medical Animation



or
Search Language
Browse
Medical Illustrations
Medical Exhibits
Medical Animations
Medical Animation Titles
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
Neurology/Neurosurgery
Ob/Gyn
Orthopedics
Pediatrics
Personal Injury
Plastic Surgery
Surgery
Urology/Nephrology
Account
Administrator Login
Biology: The Cell: 03: Structure - Structure of the Cell Membrane - 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 NSV15005 Enlarge Share
Need Additional Information?

Order by phone: 770-458-5656 or By email: dan@courtroomvisuals.com
Item #NSV15005Source #1181

Biology: The Cell: 03: Structure - Structure of the Cell Membrane - Medical Animation
MEDICAL ANIMATION TRANSCRIPT: In this video, we will be discussing the structure of the cell membrane. When scientists looked at the selectively permeable cell membrane, they described its structure as a fluid mosaic. You might know that a mosaic is a picture made up of little tiles. Like a mosaic, the cell membrane is made up of different parts as well. The cell membrane has two layers of phospholipids referred to as a lipid bilayer. The lipid bilayer isn't rigid. The phospholipids in it have the ability to move in a flexible wave-like motion. Let's take a closer look at a few phospholipids. The round head portions are hydrophilic, which means they're attracted to water. Both the extracellular fluid, meaning fluid outside the cell, and the cytoplasm inside the cell are mostly made up of water. So, the hydrophilic phospholipid heads of the outer layer will be oriented toward the extracellular fluid. And the heads of the inner layer will be oriented toward the cytoplasm. The phospholipid tails are hydrophobic, which means watery areas withheld them. So they orient toward each other in a direction as far away from the watery content as possible. There are also scattered proteins embedded in the phospholipid layers, some with carbohydrates attached. So, in the fluid mosaic model, the cell membrane is made up of different parts. And these parts make up a flexible boundary around the cell. But how do the majority of substances get in our out of the cell? Some molecules sip through the little spaces in between the phospholipids, which make up the majority of the semi-permeable cell membrane. However, other molecules are too big to fit through the cell membrane this way. So, how do these larger molecules pass through the cell membrane? The molecules move through proteins embedded in the cell membrane, either from the extracellular area into the cell, or from the intracellular area out of the cell. These substances will move through tunnels made up of these proteins. We'll explore how things move through the cell membrane in greater detail separately. [music]

YOU MAY ALSO WANT TO REVIEW THESE ITEMS:
Biology: The Cell: 02: Structure - Overview of Cell Boundaries
Biology: The Cell: 02: Structure - Overview of Cell Boundaries - NSV15002
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: 01: Structure - Overview of Cell Structure
Biology: The Cell: 01: Structure - Overview of Cell Structure - NSV15001
Medical Animation
Add to my lightbox
Find More Like This
Biology: The Cell: 10: Cell Division - Mitosis and Cytokinesis
Biology: The Cell: 10: Cell Division - Mitosis and Cytokinesis - NSV15006
Medical Animation
Add to my lightbox
Find More Like This
Biology: The Cell: 05: Cell Transport - Passive Transport
Biology: The Cell: 05: Cell Transport - Passive Transport - NSV15008
Medical Animation
Add to my lightbox
Find More Like This
Biology: Chemistry in Biology: 16: Proteins
Biology: Chemistry in Biology: 16: Proteins - NSV16038
Medical Animation
Add to my lightbox
Find More Like This