### Final Answer
The correct answer is **trigger zone**.

### Explanation
In a neuron, the summation of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs) occurs at the trigger zone, which is typically located at the axon hillock. This is where the neuron integrates the incoming signals and decides whether to generate an action potential. The other options do not represent the site of summation of these postsynaptic potentials:

1. **Dendrites**: These receive signals but do not summate them.
2. **Axon terminals**: These are involved in releasing neurotransmitters.
3. **Nodes of Ranvier**: These are gaps in the myelin sheath that facilitate the conduction of action potentials, but they are not involved in summation.

Question

### Final Answer
The correct answer is **trigger zone**.

### Explanation
In a neuron, the summation of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs) occurs at the trigger zone, which is typically located at the axon hillock. This is where the neuron integrates the incoming signals and decides whether to generate an action potential. The other options do not represent the site of summation of these postsynaptic potentials:

1. **Dendrites**: These receive signals but do not summate them.
2. **Axon terminals**: These are involved in releasing neurotransmitters.
3. **Nodes of Ranvier**: These are gaps in the myelin sheath that facilitate the conduction of action potentials, but they are not involved in summation.

Knowee AI · Accepted Answer

### Final Answer
The correct answer is **trigger zone**.

### Explanation
In a neuron, the summation of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs) occurs at the trigger zone, which is typically located at the axon hillock. This is where the neuron integrates the incoming signals and decides whether to generate an action potential. The other options do not represent the site of summation of these postsynaptic potentials:

1. **Dendrites**: These receive signals but do not summate them.
2. **Axon terminals**: These are involved in releasing neurotransmitters.
3. **Nodes of Ranvier**: These are gaps in the myelin sheath that facilitate the conduction of action potentials, but they are not involved in summation.

Summation of EPSPs and IPSPs occurs at the __________Blank of the neuron.Multiple Choicetrigger zonedendritesaxon terminalsnodes of Ranvier

Question

Summation of EPSPs and IPSPs occurs at the __________

Solution

Final Answer

Explanation

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