🕸️01
Nervous System Organization
Sort the parts: CNS vs PNS, sensory vs motor, and somatic vs autonomic.
Open →⭐02
Neuroglia
Meet the six glial cells. They support, insulate, and defend neurons.
Open →🔋03
Resting Membrane Potential
See how ion gradients, leak channels, and the Na⁺/K⁺ pump hold a neuron at −70 mV.
Open →⚡04
The Action Potential
Fire a neuron. Watch it depolarize, repolarize, and hyperpolarize.
Open →🏃05
Saltatory Conduction
Watch a signal leap from node to node on a myelinated axon.
Open →🔀06
The Synapse
See how a neurotransmitter carries the message across the gap.
Open →