Nervous Tissue and Its Functions

What are the two main classes of cells that make up nervous tissue?

• Neurons and neuroglia

• Oligodendrocytes and Schwann cells

• Dendrites and axons

• Astrocytes and microglia

What is the primary function of neurons?

• To propagate information via electrochemical impulses

• To produce myelin

• To support and protect the brain

• To form the blood-brain barrier

Which part of the neuron carries the action potential away from the cell body?

• Dendrite

• Synapse

• Axon

• Soma

What is the role of myelin in the nervous system?

• To transmit impulses

• To insulate axons

• To form synapses

• To produce neurotransmitters

Which type of neuron has several dendrites and a single prominent axon?

• Multipolar neuron

• Bipolar neuron

• Pseudounipolar neuron

• Unipolar neuron

What is the function of astrocytes in the central nervous system?

• To protect against infection

• To regulate ion concentration and form the blood-brain barrier

• To produce myelin

• To transmit nerve impulses

Which cells produce myelin in the central nervous system?

• Astrocytes

• Microglia

• Schwann cells

• Oligodendrocytes

What is the synapse?

• The star-shaped glial cell

• The gap between nerve cells where impulses are transmitted

• The cell body of a neuron

• The insulating layer around axons

What is the primary role of neuroglia?

• To generate action potentials

• To form synapses

• To support neurons and modulate their information propagation

• To conduct electrical impulses

Which cells are responsible for producing myelin in the peripheral nervous system?

• Schwann cells

• Oligodendrocytes

• Microglia

• Astrocytes