Test 3 Review: Blood Vessels, Lymphatics, and Nervous Systems 6,Be able to descr

Question

Test 3 Review: Blood Vessels, Lymphatics, and Nervous Systems

6,Be able to describe the various ways of classifying neurons

7,Be able to state the purpose of myelin on nerve cells and the role that oligodendrocytes and Schwann have in this process

8,Be able to state the different types of synapses between a nerve and its effector

9,Be able to describe to anatomy for a typical motor neuron. Be able to state the function for these anatomical structures found on the motor neuron

10,Be able to state the differences between a ganglion and a nuclei as each relates to the nervous system

Explanation / Answer

7.The myelin sheath is a protective covering that surrounds fibres called axons, the long thin projections that extend from the main body of a nerve cell or neuron. The main function of myelin is to protect and insulate these axons and enhance their transmission of electrical impulses.Transmission of nerve impulse is faster through the fibres that are more myelinated.

Oligodendrocytes produce/maintain myelin sheath in CNS and Schwann cells do the same in PNS.

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