Terrible Tooth Case form
Topics: Action potential / Pages: 7 (2284 words) / Published: Jan 27th, 2015

An Nguyen
Period 2
Physiology

The Case of the Terrible Tooth!

Part 1 --The Dentist
Questions
1. List the symptoms experienced by Mr. Gower.
Mr. Grower experiences symptoms such as feeling hot, and light headedness, and unawareness. He felt hot and warm prior to the root canal removal. Therefore this symptom is most likely hinting at some problems he got before the removal. His symptoms of lightheadedness could be due to the effects of the surgery or anesthetic. Need more information to be sure.

2. Novocain blocks action potential production at the site of injection. How do you think Novocain works on the axon membrane, and how does it block the sensation of pain?
Novocain serves to block receptors on nerve cells that sense pain. Therefore preventing neurotransmitter from binding to the receptors and stimulating sensory neurons to fire. More specifically Novocain blocks the sodium channel and prevents depolarization from occurring in the neurons of the site of injection. Because of this an action potential is not possible and neurotransmitter cannot be release.

Part 2

Questions
3. What new symptoms does Mr. Gower exhibit?
Mr. Grower now experience a stiff jaw with extreme mouth pain, a lower than normal blood pressure of 100 over 60, weakness, and muscle fatigue.

4. Which of these symptoms could be due to the previous day’s procedure?
The stiff jaw and extreme mouth pain could most likely be due to the previous day operation. This is because the mouth was operated on and the after effects of a root canal removal is starting to kick in. However the lowered blood pressure, muscle weakness, and fatigue could be due to an initial problem before the root canal.

5. Why can’t Mr. Gower open his mouth?
Mr. Gower cannot open his mouth because his jaw is in a lock state. This is most likely caused by abnormally high frequency of excitatory postsynaptic potential or EPSP in his jaw muscles. This well cause involuntary contraction of those muscle essentially

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