AP Neuron Structure & Function FLASHCARDIZZ

Front

What is the charge inside the axon when a neuron is at rest?

Back

Negative

Front

What numbers on a graph typically represent the Resting Potential of a neuron?

Back

1 and 5

Front

What type of summation occurs when multiple signals arrive at a neuron in quick succession?

Back

Temporal

Front

Why is -55 mV significant in neuron function?

Back

It is the threshold required to complete an action potential.

Front

Which channels open first when a neuron is depolarized?

Back

Sodium channels.

Front

What is the Resting Potential of a neuron?

Back

Typically around -70 mV.

Front

What is an action potential?

Back

A rapid rise and fall in voltage across a cellular membrane.

Front

What role do sodium ions play in the action potential?

Back

They enter the neuron, causing depolarization.

Front

What is the function of potassium channels during an action potential?

Back

They open to allow potassium to exit the neuron, repolarizing the membrane.

Front

What is the difference between temporal and spatial summation?

Back

Temporal summation involves multiple signals at one synapse, while spatial summation involves signals from multiple synapses.