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Nervous System

Nerve Cells - Micro

What are the functions of Synapses? allow for Enhancement or Reduction in Nerve-to-Nerve COMMUNICATION - gating passage of info
Where are Synapses located? FUNCTIONAL (not physical) connections between 2 Neurons
Where are Neuromuscular Junctions located? FUNCTIONAL connections between Motor Nerves and Muscle Cells
What is the function of Muscular Junctions? CONTRACTION of Skeletal Muscle
What would be the result of damage to a Neuromuscular Junction? Paralysis
What are the Nerve Coverings called? Neuroglia
What are Neuroglia? coiling Cell Membranes forming Myelin
What is the function of Neuroglia? providing electrical INSULATION between adjacent Axons
What is the function of Schwann cells and where are they located? improves impulse SPEED along Axon - around PERIPHERAL Nerves
What is the function of Oligodendrocytes? improves impulse SPEED along Axon - around CENTRAL Nerves
What are the Nodes of Ranvier? GAPS between Myelin Cells
What is the significance of the Nodes of Ranvier? only are of Axon having Na+ and K+ Channels
What are Nerve Trunks? Cable-like groupings of SENSORY and MOTOR fibers
Where are Nerve Trunks located? PERIPHERAL bundles of Nerves isolated by Connective Tissue - ie. Perineurium, Epineurium, Endoneurium
Created by: Kristel