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Chapter 38: Q. 23 (page 1120)

The ability of a muscle to generate tension immediately after stimulation is dependent on:

  1. myosin interaction with the M line
  2. overlap of myosin and actin
  3. actin attachments to the Z line
  4. none of the above

Short Answer

Expert verified

The correct answer is option (d).

The ability of a muscle to generate tension immediately after stimulation is dependent on none of the above

Step by step solution

01

Step : 1 Explanation for Correct answer

  • The cross-sectional area of the muscle fibre and the frequency of brain stimulation determine how much tension is generated.
  • The amount of tension that a muscle fibre can produce depends on how many cross-bridges occur between actin and myosin.
  • The number of muscle fibres stimulated and the frequency of brain stimulation to the muscle fibres determine how much tension is generated during a muscular contraction. Thus, option d is correct answer.
02

Step : 2 Explanation for incorrect answer

When the greatest number of cross-bridges are established, either within a muscle with a large diameter or when the greatest number of muscle fibres are stimulated, muscle tension is generated. so, the options a, b, and c are incorrect answer.

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