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Cell Membrane Transport - Moving Substances Across a Membrane

Logan Edmiston, MD (#111101)

This lecture covers the basics of cell membrane physiology at it relates to membrane transport. Topics that will be addressed include basic membrane structure (e.g. the lipid bilayer) and membrane barrier function. This is followed by concepts of permeability, diffusion, osmosis, and homeostasis. Finally, we will look at types of membrane transport including passive diffusion, facilitated diffusion, and active
transport such as ion pumps and endocytosis/exocytosis. This lecture is targeted at year 1 biology courses and covers basic physiology course material. It is appropriate for honors level biology students in high school. It covers human medical correlation for interest and as examples.

In this series: 7 Videos | 01:15:44 Total Length

Membrane structure, phospholipids, phospholipid bi-layer, and membrane proteins.

Part #: 1 | 10:57

Transmembrane flow, gradients, and electrochemical gradients.

Part #: 2 | 09:18

Nerst equation, examples, diffusion, and diffusion across a membrane.

Part #: 3 | 10:05

Osmosis, osmotic pressure, and tonicity.

Part #: 4 | 10:20

Facilitated diffusion, pores and gates.

Part #: 5 | 10:00

ATP and secondary active transport.

Part #: 6 | 13:23

Endocytosis, Exocytosis, and conclusion.

Part #: 7 | 11:41