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Home Q & A Board Biology-Related Homework Help General Biology
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dkpierce dkpierce
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11 years ago
I have an assignment due tonight at midnight and I am stuck on these questions, can someone help me PLEASE!!

5-1 Explain how the absolute refractory period ensures directionality of action potential propagation.

5-2: Some tissues (for example, cardiac muscle) have long absolute refractory periods. Why would this be beneficial?

5-3: What do you think is the benefit of a relative refractory period in an axon of a sensory neuron?
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#1
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11 years ago
1. A refractory period is when the membrane is less excitable. When local currents develop, the action potential must move forward because the previous section is in the absolute refractory period.

2. A long absolute refractory period ensures that the muscle contracts fully.

3. The benefit of a relative refractory period in an axon of a sensory neuron is that it is easier to modify the intensity of the sensation by altering the frequency of stimulation.
dmricks,  hquiroga4902,  asickles1124,  cait618,  lowrse
- Master of Science in Biology
- Bachelor of Science
dkpierce Author
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#2
11 years ago
Thank you sooooo much!!  Grinning Face
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