Neuron and Axon Dendrite Cilia

Exp #2: Organization of Nervous Tissue

Exercise 1: Multipolar Neurons

Paste an image found on LabPaq site or Google images of a spinal cord smear and label its basic parts using basic labeling boxes provided. Identify the cell body, the nucleus, the large nucleolus, and granular Nissl bodies on the slide. Try to find the axon and differentiate it from the dendrites if possible. Hint: after pasting image, right click on it and select “order”, “send to back”.

cell body

nucleus

large nucleolus

Nissl bodies

axon

dendrites

Now, paste an image found on LabPaq site or Google images of a teased myelinated nerve and label its basic parts (nodes of Ranvier, neurilemma, the axon, Schwann cell nuclei and myelin sheath) using the labeling boxes provided.

myelin sheath

Schwann cell Nuclei

Axon

node of Ranvier

neurilemma

Questions
A. What is the function of a neuron?

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

C. What gives a multipolar neuron its name?

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

Exercise 2: Structures of Selected Neurons

Paste an image of the Purkinje Cells Slide here and label its basic parts as best you can.

Receptor
Axon
Terminal buttons of axon

Dendrite
Cilia
Soma

Paste an image of the Pyramidal Cells Slide here and label its basic parts as best you can.

Receptor
Axon
Terminal buttons of axon

Dendrite
Cilia
Soma

Paste an image of the Dorsal Root Ganglion slide here and label its basic parts as best you can.

Receptor
Axon
Terminal buttons of axon

Dendrite
Cilia
Soma

A. Which slide contained bipolar neurons?

B. Which slide contained unipolar neurons?

C. What was unique about the dorsal root ganglion compared to the other two slides?

Exercise 3: The Neuroglia and Supporting Cells

Data Table 1: The Neuroglia and Supporting Cells Cell | Function | Location (CNS/PNS) | | Support and brace neurons to nutrient