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Which of the following is correct regard...

Which of the following is correct regarding changes in muscle fibre from relaxed to contracted state in the given figure ?

A

The length of the thick and thin myofilaments has changed.

B

length of both anisotropic and isotropic band has changed.

C

The myosin cross-bridges move on the surface of actin and the thin and thick myofilaments slide past each other.

D

length of the sarcomere remain same.

Text Solution

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The correct Answer is:
C
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NCERT FINGERTIPS-LOCOMOTION AND MOVEMENT-Locomotion And Movement
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  3. Which of the following is correct regarding changes in muscle fibre fr...

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  4. In a muscle undergoes rapid contraction and relaxation, the sarcoplasm...

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  5. Consider the following statements each with one or two blanks. (i) ...

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  6. Which of the following statements about the mechanism of muscle contra...

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  7. The slow twitch muscle fibre which are rich in myoglobin and have abun...

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  8. Identify from the following list, the characteristics of red muscles (...

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  9. Myoglobin is present in

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  10. Which of the following is a source of energy for muscle contraction ?

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  11. The protien whose removal enables myosin to bind actin in smooth muscl...

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  12. During muscle contraction, actin and myosin ffrom

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  13. Which of the following ions help in muscle contraction ?

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  14. If a stimulus, several times greater than the threshold stimulus, is p...

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  15. Which of the following is incorrect regarding muscle contraction?

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  16. Upon stimulation of skeletal muscles, calcium is immediately made avai...

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  17. In the resting muscle fibre, tropomysin partially covers

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  18. Ends of long bones are covered with

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  19. Examine the given diagrammatic view of human skull given below and ide...

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  20. Which of the following is a bone of skull?

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