This lesson will describe the structure and function of the plasma membrane of a cell.

Learn how the sodium-potassium (Na+/K+) pump works, and its role in establishing resting membrane potentials. [7:17]

The fluid mosaic model describes the cell membrane as a tapestry of several types of molecules that are constantly moving. This movement helps the cell membrane maintain its role as a barrier between the inside and outside of the cell...

Learn about the major components that make up our cell membrane in this video. Also, explore how the fluid mosaic model describes how the cell membrane functions. [8:52]

A video explaining how the cell membrane is formed by a phospholipid bilayer. Learn how this membrane allows some molecules to passively move through while others cannot pass the membrane. [8:51]

A video reviewing over the membrane proteins, how they function, and how they help makeup the cell membrane's structure. [8:11]

This video explains how a sodium-potassium pump can maintain a voltage gradient across a cell or neuron's membrane. The sodium-potassium pump goes through cycles of shape changes to help maintain a negative membrane potential. [13:52]

The resource from Khan Academy and the Association of American Medical Colleges provides study content for the MCAT. This resource discusses how the phospholipids in the cell membrane maintain membrane fluidity. By William Tsai.

Uniporters, symporters, and antiporters are proteins that are used in the transport of substances across a cell membrane. This video describes how each of these works in the transport process. [7:13]

A video explaining the structure and function of the basis organelles found in an animal cell. [1:23]

Paul Andersen explains how cells are selectively permeable with the help of their cell membrane. The main constituents of the cell membrane, including cholesterol, glycolipids, glycoproteins, phospholipids, and proteins are included. The...

Paul Andersen describes how cells move materials across the cell membrane. All movement can be classified as passive or active. Passive transport, like diffusion, requires no energy as particles move along their gradient. Active...

Paul Andersen gives you a brief introduction to the cell membrane. He starts by describing amphipathic nature of a phospholipid and how it assembles into a membrane. He gives an overview of the fluid mosaic model inside cells. He also...

Paul Andersen explains the importance and location of interstitial fluid. He describes both the hydrostatic and osmotic pressures that move fluid between the interstitial fluid and the capillary. He also explains the major function of...