Transcript Slide 1 - MisterSyracuse.com

Name ______________________________________ Date ____________________ Period ___________
QUIZ: THE NERVOUS SYSTEM
Directions: Please put your answers directly on this quiz. For multiple choice questions, write the
letter of your choice on the line provided. For other questions, please use the space provided to make your
response. Read each item carefully, and make sure that your response addresses what is being asked in the
question. Leave no numbers naked and no questions blank. Relax, good luck, and enjoy!
0. When is a door not a door?
1. What is the purpose of the human nervous system?
2. Which of these ions moves OUT of a neuron during an action potential?
A. Na+
B. K+
C. ClD. As+
_________
3. Why is afterhyperpolarization (undershoot) so important?
4. What would be one way to stop a nerve signal?
A. Wrap the entire axon in myelin.
B. Put a gap between two neruons.
C. Make one neuron send a signal to many others.
D. Make many neurons send their signals to just one other.
_________
5. Which part of the brain would control a function like vomiting or digestion?
A. Medulla
B. Central ganglion
C. Cerebrum
D. Cerebellum
_________
6. What is the purpose of myelin?
A. To slow down the action potential.
B. To make action potentials happen farther apart, so the signal can travel faster.
C. To put ze wine and ze cheese in ze Node of Ranvier, hon hon hon!
D. It prevents the signal from loosing its strength over long distances.
_________
7. What is a reflex?
8. How does a nerve signal cross the synapse?
9. Many chemicals can affect the nervous system, including mercury. Mercury can cause, among other
things, tremors that start in the fingers and spread to the lips, eyelids and tongue. Make a hypothesis about
how mercury causes these symptoms.
10. In a reflex, what is the neuron that goes INTO the spinal cord called?
A. Excellent
B. Efferent
C. Afferent
D. Endogenous
_________
11. A patient is seen by a doctor, and the patient’s patellar (knee) reflex is very small. What might this
indicate to the doctor?
12. What are the finger-like projections on the end of a neuron called?
A. Phalanges
B. Carpals
C. Zygotes
D. Dendrites
_________
13. How can a human hand sense something that is soft, hard, bumpy, or smooth, if all action potentials are
the same?
14. Multiple sclerosis is a disease that causes neurons in the central nervous system to loose their myelin. In
a few, complete sentences, explain what effects you think this disease might have on a human.