Introduction to the Nervous System. Neuron Multipolar neuron Axon Glial Cells Nucleus Nucleolus Dendrite Axon Hillock Cell body.

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Presentation transcript:

Introduction to the Nervous System

Neuron

Multipolar neuron Axon Glial Cells Nucleus Nucleolus Dendrite Axon Hillock Cell body

Schwann cell/Oligodendrocyte

Figure A longitudinal section of axons Node of Ranvier Schwann cell Axon

Cross section of a nerve

Cross section of a nerve 40X Epineurium Perineurium Endoneurium Bundle of axons

Figure Cross section of a nerve 400X Epineurium Perineurium Endoneurium Axon

Longitudinal section of unmyelinated nerve

Spinal cord cross section

Cross section of the spinal cord Posterior Gray Horn Lateral Gray Horn Anterior Gray Horn Central Canal

Cross section of the spinal cord Posterior White Column Lateral White Column Anterior White Column Gray Commisure

Motor neurons from the spinal cord Neuroglial cells Dendrite Nucleus

Axon Terminal Dendrite Axon Mitochondria Myelin Sheeth Nucleus Axon Myelin Sheeth Neuron Model with Schwann cells

Figure 9.3: Structure of a myelinated neuron Axolema (Axon cell membrane) Nissel Bodies Neurofibrils Nucleus of the neuron Nucleolus of the neuron