Question

Stimulus several times greater than the threshold stimulus is provided to muscle fiber, it will

• A. Contract with same force
• B. Contract forcefully
• C. Contract slightly
• D. Undergo tetany

Answer 1

Answer: (A)

Contract with same force

• The all-or-none law is a principle that states that the strength of a response of a nerve cell or muscle fibre is not dependent upon the strength of the stimulus. If a stimulus is above a certain threshold, a nerve or muscle fibre will fire.
  
• Hence stimulus several times greater than the threshold stimulus is provided to muscle fibre, it will contract with the same force because of all or none phenomenon'.
• So, the correct answer is 'Contract with the same force'.