Mastering MCAT Biology: Action Potential and the Anatomy of a Neuron

This video covers everything you need to know about action potentials and the anatomy of a neuron for the MCAT! Learn about voltage-gated sodium channels, the sodium-potassium pump, myelin sheath, nodes of Ranvier, depolarization, saltatory conduction, and the all-or-nothing response.

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0:00 In this video...
0:52 MCAT Style Practice Question
2:50 Anatomy of a Neuron
4:40 Key Features of an Axon
7:58 Action Potential pt 1
10:55 Sodium/Potassium ATPase Active Pump
14:21 Leak Channels
17:32 Action Potential pt 2
19:46 Voltage-Gated Sodium Channels
22:15 Voltage-Gated Potassium Channels
25:03 Return to Resting Potential
25:45 The Myelin Sheath and Saltatory Conduction
29:48 Answering our MCAT Style Practice Question
30:48 The Roman Numeral Trick