Practice question
Question
The muscle tone was increased after electrolytic lesion of the caudate nucleus in a cat. The muscle tone decreased within seven days. The following explanations were given by the researcher. A. The functional recovery was due to plastic changes of nervous system. B. The brain tissue surrounding the lesioned area was nonfunctional due to circulatory insufficiency immediately after surgery which led to the greater functional loss. C. The circulatory status in surrounding tissue recovered with time resulting in partial functional recovery. D. The degenerating nerve fibres were regenerated which underlie functional recovery. Which one of the following is correct?
Explanation
In the muscle tone was increased after electrolytic, B and C represents established outcome. functional assays confirms option B (B and C) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.
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