Nervous Tissue

Front

What are interneurons?

Back

Interneurons are neurons that act within the Central Nervous System (CNS) to create local networks of neurons. They are also known as association neurons.

Front

What is myelin?

Back

Myelin is a fatty substance that covers most axons, forming segments that are interrupted by nodes of Ranvier (neurofibril nodes).

Front

What role do astrocytes play in the nervous system?

Back

Astrocytes help to create the blood-brain barrier, which protects the brain from harmful substances in the bloodstream.

Front

What are vasa nervorum?

Back

Vasa nervorum are blood vessels that supply nerves with blood.

Front

What is the soma of a neuron?

Back

The soma is the part of a neuron that contains the nucleus and is responsible for maintaining the cell's health.

Front

What are dendrites?

Back

Dendrites are the branched extensions of a neuron that receive signals from other neurons.

Tags

NGSS.MS-LS1-2

Front

What is the function of the axon?

Back

The axon is a long, slender projection of a neuron that conducts electrical impulses away from the neuron's cell body.

Front

What are nodes of Ranvier?

Back

Nodes of Ranvier are gaps in the myelin sheath of an axon that facilitate the rapid conduction of nerve impulses.

Front

What are oligodendrocytes?

Back

Oligodendrocytes are a type of glial cell in the CNS that produce myelin, which insulates axons.

Front

What are microglia?

Back

Microglia are the immune cells of the CNS that protect against pathogens and remove debris.