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प्रश्न
Write true or false. If false, change the statement so that it is true:
Actin is present in thin filament
विकल्प
True
False
उत्तर
This statement is True.
Explanation:
Actin is a primary component of thin filaments in muscle fibres. These thin filaments, along with myosin-thick filaments, play a crucial role in muscle contraction.
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संबंधित प्रश्न
Draw the diagram of a sarcomere of skeletal muscle showing different regions.
Define sliding filament theory of muscle contraction.
Write true or false. If false, change the statement so that it is true:
H-zone of striated muscle fibre represents both thick and thin filaments.
Write the difference between:
Red and White muscles
How do you distinguish between a skeletal muscle and a cardiac muscle?
Thin filament of myofibril contains 2 ‘F’ actins and two other proteins namely ______ and ______.
In a muscle fibre Ca++ is stored in ______.
Read the following statements.
- Bands are dark bands and contain myosin
- I bands are light bands and contain actin
- During muscle contraction, the A band contracts.
- The part between the two Z - lines is called a sarcomere.
- The central part of the thin filament, not overlapped by the thick filament is called Hzone.
Of the above statements
Myoglobin occurs in
In a skeletal muscle, bundles of muscle fibres are held together by ______.
Which of the following statements wrongly represents the nature of smooth muscle?
Match the following and mark the correct option
| Column I | Column II |
| A. Fast muscle fibres | i. Myoglobin |
| B. Slow muscle fibres | ii. Lactic acid |
| C. Actin filament | iii. Contractile unit |
| D. Sarcomere | iv. I-band |
Which one of the following statement is incorrect?
Muscles with characteristic striations and involuntary are ______.
