Organization of Nervous Tissue

Topics: Nervous system, Neuron, Axon Pages: 6 (896 words) Published: June 18, 2013
Organization of Nervous Tissue

Laszlo Vass, Ed.D. Version 42-0017-01-01

Lab RepoRt assistant

This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.

Purpose

● What is the purpose of this exercise?

Are there any safety concerns associated with this exercise? If so, list what they are and what precautions should be taken. Exercise 1: Multipolar Neurons
obseRvations

Sketch your observations through the microscope of the neuron, the ox spinal cord smear, and the teased myelinated nerve. Please describe what you observed on each slide.

Questions

A. What is the function of a neuron?

To carry and transmit electrical impulses generated by both internal and external stimuli.

B. What is the difference between a neuron and a nerve?

Nerves are organizes bundles of nervous system cells. These bundles are assigned specific areas of the body from
which they receive and transmit information. Neurons are specialized cells in the nervous system. They are designed to carry
and transmit electrical impulses generated by both internal and external stimuli.

C. What gives a multipolar neuron its name?

Their many branches, processes and extensions that come off of their cell bodies.

D. What are the functions of the dendrites and axons?

Dendrites receive incoming signals for the nerve cell. Axons are the branches from the cell body that

carry the outgoing signals of the cells to other cells in the body, including other neurons.

Exercise 2: Structures of Selected Neurons
Questions

A. Which slide contained bipolar neurons?
Purkinje

B. Which slide contained unipolar neurons?
Dorsal Root Ganglion

C. What was unique about the dorsal root ganglion compared to the other two slides?
You can see the nissle substance, nucleus, satellite cells and capsules.

Exercise 3: The Neuroglia and Supporting Cells
obseRvations

| | |Data Table 1: The Neuroglia and Supporting Cells | |Cell |Function |Location (CNS/PNS) | | Astrocytes |Support and brace neurons to nutrient blood capillaries | CNS | | Microglia |Provide protection and sense neuron injuries. Can be phagocytic. | CNS | | Ependymal |Ciliated cells found in the cavities of the brain. Help to circulate | CNS | | |cerebrospinal fluid. | | | Oligodendocytes |Makes the myelin sheath in the central nervous system. | CNS | | Satellite |Surround neuron cell bodies with ganglia. Function is mostly unknown. | PNS | | Schwann |Produces the myelin sheath in the peripheral nervous system. | PNS |...
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