Neuron

Front

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

Back

Axon

Front

What insulating material forms a layer around the axon of a neuron, enabling electrical signals to travel faster?

Back

Myelin sheath

Front

How many nerve cells does the brain contain?

Back

Approximately 100 billion

Front

What is the primary tissue type that makes up the brain?

Back

Nerve tissue

Front

What part of the neuron releases neurotransmitters into the synaptic cleft?

Back

Axon terminal

Front

What are the short, branch-like structures of a neuron that receive signals from other neurons?

Back

Dendrites

Front

What is the function of neurotransmitters in the nervous system?

Back

To transmit signals between neurons across the synapse.

Front

What is the role of the myelin sheath in neuronal function?

Back

To insulate the axon and increase the speed of electrical signal transmission.

Front

What is the synaptic cleft?

Back

The small gap between the axon terminal of one neuron and the dendrite of another.

Front

What is the basic functional unit of the nervous system?

Back

Neuron