Action potentials are like the big moments when neurons talk to each other! Here’s a simple way to understand how they work:
Threshold Level: A neuron gets enough signals, and it reaches a special point called the threshold. This is when an action potential begins.
Depolarization: Certain channels in the neuron's membrane open up. This lets in sodium ions (Na⁺), which makes the inside of the neuron less negative. This is called depolarization.
Propagation: The action potential moves down the axon. Myelin sheaths, which are like coverings on the axon, help it go faster. This quick movement is called saltatory conduction.
Synaptic Transmission: When the action potential reaches the end of the axon, calcium channels open. Calcium ions (Ca²⁺) come in and make tiny bubbles called synaptic vesicles release neurotransmitters. These travel across the gap between neurons, called the synaptic cleft.
Receptor Binding: The neurotransmitters attach to special sites called receptors on the next neuron. This keeps the conversation going!
And that’s how action potentials help neurons communicate!
Action potentials are like the big moments when neurons talk to each other! Here’s a simple way to understand how they work:
Threshold Level: A neuron gets enough signals, and it reaches a special point called the threshold. This is when an action potential begins.
Depolarization: Certain channels in the neuron's membrane open up. This lets in sodium ions (Na⁺), which makes the inside of the neuron less negative. This is called depolarization.
Propagation: The action potential moves down the axon. Myelin sheaths, which are like coverings on the axon, help it go faster. This quick movement is called saltatory conduction.
Synaptic Transmission: When the action potential reaches the end of the axon, calcium channels open. Calcium ions (Ca²⁺) come in and make tiny bubbles called synaptic vesicles release neurotransmitters. These travel across the gap between neurons, called the synaptic cleft.
Receptor Binding: The neurotransmitters attach to special sites called receptors on the next neuron. This keeps the conversation going!
And that’s how action potentials help neurons communicate!