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BIO409H5 Quiz: Quiz 9.docx

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emeralddog909
27 Apr 2012
School
UTM
Department
Biology
Course
BIO409H5
Professor
Angela B Lange

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Document Summary

The two lateral giant fibers of the earthworm nerve cord. Question 2 receives sensory input from the posterior portion of the worm. Question 3 distance travelled over time taken. The startle response or escape behavior that leads to withdrawal in worms. Question 5 is initiated by giant axons. The median giant fiber has a faster conduction velocity than the lateral giant fibers and therefore its response should occur: Question 6 to the left of the lateral giant fiber"s response. The relative refractory period is the interval immediately following the absolute refractory period during which initiation of a second action potential is inhibited but not impossible, i. e. if given a larger stimulus an ap will occur. The stimulus voltage at which you first see a response from the giant fibers is called: The central giant fiber is the largest of the 3 fibers in the earthworm nerve cord.

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