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5 July, 00:30

Marcus is excited to be working in the laboratory of Dr. Flores, an expert on electrical signaling in neurons. However, he is surprised to learn that the research is done on squid axons placed in sea water. He asks Dr. Flores the reasons for this. Which of the following is NOT one of the reasons that Dr. Flores provides? a. A recording electrode can be inserted into a squid axon without disrupting its function. b. Sea water has a chemical composition similar to the fluid surrounding our body's cells. c. Squid axons are myelinated, increasing the speed of propagation of an action potential. d. Squid axons can be as great as one millimeter in diameter

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  1. 5 July, 00:39
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    squid axons are myelinated, increasing the speed of propagation of an action potential.

    Explanation:

    The myelin sheath is a layer on each nerve cell. This mainly has two functions:

    The myelin sheath has disjointed segments. These segments cause the action potential to jump from one segment to another. If the myelin sheath was not present then the action potential would not be able to travel the entire length of the nerve cell.

    It acts as a protective layer of the nerve cell.

    Placing the squid on water should not have any effect on the speed at which the action potential travels through the nerve cell.
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Home » Social Studies » Marcus is excited to be working in the laboratory of Dr. Flores, an expert on electrical signaling in neurons. However, he is surprised to learn that the research is done on squid axons placed in sea water. He asks Dr. Flores the reasons for this.
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