In Your Ph

question 7

Multiple Choice

In your Ph.D.research,you use thin slices of brain tissue to study neuronal signaling.You attach an electrode to a single neuron,but cannot detect any activity.What is the most likely explanation?

• A)When you sliced the brain,you disconnected the cell from its dendrites.
• B)Neurons are not electrically active -- you should be recording neuroglia instead.
• C)When you sliced the brain,you disconnected the cell from its neuroglia.
• D)Excessive myelination is blocking inputs to the cell.

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Definitions:

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A tax system where the tax rate increases as the taxable amount or income of the taxpayer increases.