Nervous System

Front

What is a nerve impulse?

Back

A nerve impulse, also known as an action potential, is a temporary change in the electrical charge of a neuron that allows it to transmit signals.

Front

What is the long, fiber-like part of a neuron that sends information to receiving neurons?

Back

The axon is the long, fiber-like part of a neuron that transmits information to other neurons.

Front

What is the central nervous system (CNS) made of?

Back

The central nervous system (CNS) is made up of the brain and spinal cord.

Front

What part of a neuron receives information from other neurons?

Back

Dendrites are the parts of a neuron that receive information from other neurons.

Front

What is the purpose of the myelin sheath on the axon?

Back

The myelin sheath improves the conductivity of the axon, allowing for faster transmission of nerve impulses.

Front

What is the function of the synapse?

Back

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

Front

What are neurotransmitters?

Back

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

Front

What is resting potential?

Back

Resting potential is the electrical charge difference across the membrane of a neuron when it is not actively transmitting a signal.

Front

What is the role of the spinal cord in the nervous system?

Back

The spinal cord transmits signals between the brain and the rest of the body and coordinates reflexes.

Front

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

Back

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