Eaton High School 1
A & P Snow Day 8
Name: ________________________
Date: ______ Block: ________
INSTRUCTIONS:
Record your answers to each of the following questions by visiting the following
Web Quest page:
http://cmote.myweb.uga.edu/nervous%20system%20webquest.htm
** Not all web links for this web quest are active on the web page above. Please
reference the text links below to help you complete the web quest. **
1. Conduction of Nerve Impluses
View the animations of saltatory conduction and continuous conduction by finding the "propagation of
the action potential." Describe the similarities and differences in these two methods of neural impulse
transmission. Use the starred links below, or find your own.
*http://faculty.massasoit.mass.edu/whanna/201/201_content/topicdir/nervous/nervous_media/nervous_VD/page267/
page267.html
*https://www.khanacademy.org/science/biology/human-biology/v/saltatory-conduction-in-neurons
2. Pre-Synaptic and post-synaptic transmission
Go through the animation of a nerve impulse from the pre-synaptic neuron to the post-synaptic
neuron and answer the following questions. Use these links:
*http://www.dnatube.com/video/2871/Nerve-Impulse
*http://www.dnatube.com/video/1105/Understanding-Action-Potential-and-Nerve-Impulses
a. What is the space in between the two neurons?
b. When the action potential reaches the terminal end of the pre-synaptic neuron how does it continue?
c. What does a neurotransmitter bind to when it crosses the synapse to the post-synaptic neuron?
d. What stores neurotransmitters?
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Eaton High School 2
A & P Snow Day 8
7. Diseases of the Brain-Spongiform Encephalitis
Mad Cow disease! Use the link below – the one on the web quest is broken.
http://www.nobelprize.org/nobel_prizes/medicine/laureates/1997/illpres/infect.html Most of the
information you are looking for will be found here – but you may search other sites as well.
Animation: http://www.youtube.com/watch?v=TiHlZOICNGU
a. Where does the term prion come from?
b. Where does the prion enter the cell?
c. A self-replicating protein! How does the prion replicate?
d. What causes hereditary forms of prion diseases?
e. Why is Mad Cow's disease called spongiform encephalitis?
f. What is formed as a result of neuronal cell death?
g. How many types of prion diseases are shown?
h. How did Kuru spread in the Fore people of New Guinea?
8. Neurotransmitters and Synaptic Transmission
1. Move the molecules around in the program that shows the types of neurotransmitters. What
are the four neurotransmitters that you see here? Broken web link on web quest – go here
instead:
http://lessons.harveyproject.org/development/nervous_system/cell_neuro/synapses/xmtrs.html
______________________________________________________________________________
10. Depression and Prozac
1. Click here for the article and animation: http://depression.emedtv.com/prozac/how-doesprozac-work.html.
What neurotransmitter is associated with depression?
How does Prozac increase the levels of this transmitter?
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Eaton High School 3
A & P Snow Day 8
2. What is different between the normal and depressed neuron with synapse?
How does the animation portray the effects of prozac in the prozac neuron animation?
11. The Neurochemistry of Addiction
Helpful link: http://teens.drugabuse.gov/mom/mom_stim1.php
1. Click on the animation of how cocaine works in the brain
(http://www.thirteen.org/closetohome/science/html/whydrugs.html)
Click on the “with cocaine” and “without cocaine” links in the right hand panel to see the
difference in the animations.
Even long after one has stopped using cocaine, what can persist?
What feelings does the person have after stopping cocaine use?
2. Go through Sara's Quest for how substances affect the brain
(http://teens.drugabuse.gov/sarasquest/sqgame.php) with Sara Bellum. Begin by clicking
methamphetamine on the map. Answer the questions that Sara Bellum poses during the
game on your paper for the following drugs in this order:
a. methamphetamine
b. marijuana
c. stimulants
d.inhalants
e. opiates
f. hallucinogens
g. steroids
h. nicotine
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Eaton High School 4
A & P Snow Day 8
Your opinion of the Sarah’s Quest game:
*Feel free to explore other areas of Sarah’s site, “NIDA for Teens”.
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