Neurons and Structure
Neuroglia
Nervous Tissue and Function
Lab Observations
100

This type of neuron has many dendrites and one axon and is the most common in the brain and spinal cord.

multipolar neuron

100

This type of neuroglia forms the myelin sheath in the central nervous system (CNS)

oligodendrocytes

100

These neurons transmit impulses from sensory receptors to the CNS

sensory (afferent) neurons

100

On a microscope slide of a spinal cord smear, these darkly stained small nuclei found near neurons are most likely from these supporting cells

neuroglia

200

This part of the neuron conducts impulses away from the cell body.

the axon

200

These star-shaped neuroglial cells support neurons and blood vessels and help maintain the blood-brain barrier.

astrocytes

200

This is the connective tissue layer surrounding a fascicle (bundle) of nerve fibers

perineurium

200

In the longitudinal section of a nerve, this narrow gap between Schwann cells helps increase the speed of impulse conduction

the node of Ranvier

300

These are threadlike structures that extend into the axon and help maintain cell shape.

neurofibrils

300

In the peripheral nervous system, this cell forms myelin and contains the neurilemma, which is vital for nerve regeneration.

Schwann cells

300

This connective tissue layer wraps around each individual nerve fiber and its Schwann cell.

endoneurium

300

When viewing a posterior root ganglion under the microscope, these large, round structures grouped together are the cell bodies of these neurons

sensory (afferent) neurons