Nervous System Review

Front

What is the function of the axon in a neuron?

Back

The axon is the part of a neuron that transmits electrical impulses away from the cell body to other neurons or muscles.

Front

What is the role of the autonomic nervous system?

Back

The autonomic nervous system controls involuntary bodily functions, such as heart rate, digestion, and respiratory rate.

Front

What is hyperpolarization in the context of neuron activity?

Back

Hyperpolarization is a change in a neuron's membrane potential that makes it more negative, moving it further away from the threshold for firing an action potential.

Front

What is resting potential in a neuron?

Back

Resting potential is the electrical potential of a neuron when it is not actively sending a signal, typically around -70mV.

Front

What is the function of the sodium-potassium pump?

Back

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

Tags

NGSS.HS-LS1-3

Front

What are dendrites and their function?

Back

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

Front

What is the myelin sheath and its importance?

Back

The myelin sheath is a fatty layer that insulates axons, increasing the speed of electrical signal transmission along the neuron.

Front

What is the difference between the central nervous system and the peripheral nervous system?

Back

The central nervous system consists of the brain and spinal cord, while the peripheral nervous system includes all the nerves outside the central nervous system.

Front

What is an action potential?

Back

An action potential is a rapid rise and fall in voltage across a neuron's membrane, allowing for the transmission of signals along the axon.

Front

What is the role of neurotransmitters?

Back

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