Action Potential, Synapses, & Neurons Test

Front

What is an action potential?

Back

An action potential is a rapid, temporary change in the electrical membrane potential of a neuron, allowing it to transmit signals along the axon.

Front

What role do dendrites play in a neuron?

Back

Dendrites are the branched extensions of a neuron that receive signals from other neurons and transmit them to the cell body.

Front

True or False: A neuron can have multiple axons.

Back

False. A neuron typically has one axon.

Front

What is the function of the sodium-potassium pump?

Back

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

Front

What type of neurons are motor and association neurons classified as?

Back

Motor and association neurons are classified as multipolar neurons.

Front

What is a synapse?

Back

A synapse is the junction between two neurons, where neurotransmitters are released to transmit signals.

Front

What is the sequence of signal transmission in response to a sensory stimulus?

Back

The correct sequence is: Afferent neuron, interneuron, motor neuron.

Front

What are neurotransmitters?

Back

Neurotransmitters are chemical messengers that transmit signals across a synapse from one neuron to another.

Front

What is the resting membrane potential?

Back

The resting membrane potential is the electrical potential difference across the neuronal membrane when the neuron is not actively transmitting signals.

Front

What is the difference between afferent and efferent neurons?

Back

Afferent neurons carry sensory information to the central nervous system, while efferent neurons carry motor commands away from the central nervous system.