Getting Nervous Review

Front

What is required for a neuron to generate an action potential?

Back

A neuron must receive more excitatory neurotransmitters than inhibitory neurotransmitters.

Front

What phase of the action potential is represented by the number 4 on a graph?

Back

Hyperpolarization phase.

Front

What is the function of the axon terminal in a neuron?

Back

The axon terminal is responsible for transmitting signals to other neurons or target cells.

Front

What is an electrical impulse within a single neuron called?

Back

An action potential.

Front

True or False: The sodium-potassium pump is involved in establishing the resting membrane potential.

Back

True.

Front

Define 'resting membrane potential'.

Back

The resting membrane potential is the electrical potential difference across the membrane of a neuron when it is not actively sending a signal.

Front

What role do excitatory neurotransmitters play in neuron signaling?

Back

Excitatory neurotransmitters increase the likelihood that a neuron will fire an action potential.

Front

What is the difference between excitatory and inhibitory neurotransmitters?

Back

Excitatory neurotransmitters promote action potentials, while inhibitory neurotransmitters decrease the likelihood of action potentials.

Front

What is the significance of the sodium-potassium pump in neuronal function?

Back

The sodium-potassium pump helps maintain the resting membrane potential by moving sodium ions out of the cell and potassium ions into the cell.

Front

What happens during the depolarization phase of an action potential?

Back

During depolarization, sodium channels open, allowing sodium ions to flow into the neuron, making the inside more positive.