1.

Assertion : All muscle follow " all or none" principle. Reason : All muscles contract either fully or do not contract at all depending upon the threshold stimulus availability.A. If both Assertion and Reason are ture and the Reason is the correct explanation of the Assertion.B. If both Assertion and Reason are ture, but the Reason is not the correct explanation of the Assertion.C. If Asserion is ture, but Reason is false .D. If both Assertion and Reason are false.

Answer» Correct Answer - D


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