8:59

Intro to Cell Signaling

13:12

Action Potential in the Neuron

9:50

Osmosis and Water Potential (Updated)

9:09

Inside the Cell Membrane

12:33

Action Potential - Firing of a Neuron - Depolarization

5:51

Sodium Potassium Pump - Active Transport

7:40

Diffusion

8:47

Cellular Respiration (UPDATED)