Action Potentials Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
What is the definition of Threshold Stimulation? | the minimum DEPOLARIZATION required to trigger a Na+ permeability change --> AP |
What is the definitions of Subthreshold? | Insufficient DEPOLARIAZATION for a response |
T/F The lower the amplitude of an AP the less likely it is to reach the synapse. | F. All-or-None Principle - AP attains FULL amplitude (30mv at 1ms) or it does not occur |
What is Hyperpolarization? | MORE negative RP --> decreased membrane excitability |
What are some of the causes of Hyperpolarization? | 1. INTERFERENCE with Na+ INFLUX; 2. INCREASED Extracellular Ca++ |
What medicine causes Hyperpolarization and what is its function? | Lidocaine - interference with Na+ INFLUX - anesthesia |
What is Depolarization? | LESS negative RP --> INCREASED membrane Excitability |
What are some causes of Depolarization? | 1. ENHANCEMENT of Na+ INFLUX; 2. DECREASED Extracellular Ca++ |
What is Paresthesia? | Increased membrane permeability |
What is a side effect of Paresthesia? | Abnormal Sensation, Hallucination, Hearing Things, Schizo |
Created by:
Kristel
Popular Laboratory Science sets