Q. 23 - Biology

Question

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 

Step-by-Step Solution

Answer

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 : 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.

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.