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What is the functional unit of a muscle fiber?
- a)Myofilament
- b)Sarcomere
- c)Myofibril
- d)Sarcoplasm
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
What is the functional unit of a muscle fiber?a)Myofilamentb)Sarcomere...
Answer: B.
Solution: The sarcomere is the functional and contractile unit of a muscle fiber. It is the segment of the myofibril that lies between two successive Z lines, containing bundles of thick and thin myofilaments. This arrangement allows for muscle contraction through the sliding filament theory, where thin filaments slide over thick ones to shorten the sarcomere, leading to muscle contraction.
Solution: The sarcomere is the functional and contractile unit of a muscle fiber. It is the segment of the myofibril that lies between two successive Z lines, containing bundles of thick and thin myofilaments. This arrangement allows for muscle contraction through the sliding filament theory, where thin filaments slide over thick ones to shorten the sarcomere, leading to muscle contraction.
Most Upvoted Answer
What is the functional unit of a muscle fiber?a)Myofilamentb)Sarcomere...
Functional unit of a muscle fiber
Muscle fibers are the basic building blocks of muscles in the human body. The functional unit of a muscle fiber is known as a sarcomere.
Sarcomere
- A sarcomere is the smallest contractile unit of a muscle fiber.
- It is composed of two main protein filaments: actin and myosin.
- The arrangement of actin and myosin filaments within a sarcomere gives muscles their striated appearance.
- Sarcomeres are responsible for muscle contraction and relaxation.
- When a muscle contracts, sarcomeres shorten in length as myosin filaments pull actin filaments closer together.
- This shortening of sarcomeres causes the entire muscle fiber to contract, leading to movement.
Understanding the structure and function of sarcomeres is essential for understanding how muscles work and how they generate force. Sarcomeres play a crucial role in muscle function and are vital for various bodily movements and functions.
Muscle fibers are the basic building blocks of muscles in the human body. The functional unit of a muscle fiber is known as a sarcomere.
Sarcomere
- A sarcomere is the smallest contractile unit of a muscle fiber.
- It is composed of two main protein filaments: actin and myosin.
- The arrangement of actin and myosin filaments within a sarcomere gives muscles their striated appearance.
- Sarcomeres are responsible for muscle contraction and relaxation.
- When a muscle contracts, sarcomeres shorten in length as myosin filaments pull actin filaments closer together.
- This shortening of sarcomeres causes the entire muscle fiber to contract, leading to movement.
Understanding the structure and function of sarcomeres is essential for understanding how muscles work and how they generate force. Sarcomeres play a crucial role in muscle function and are vital for various bodily movements and functions.
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What is the functional unit of a muscle fiber?a)Myofilamentb)Sarcomerec)Myofibrild)SarcoplasmCorrect answer is option 'B'. Can you explain this answer? for Humanities/Arts 2025 is part of Humanities/Arts preparation. The Question and answers have been prepared according to the Humanities/Arts exam syllabus. Information about What is the functional unit of a muscle fiber?a)Myofilamentb)Sarcomerec)Myofibrild)SarcoplasmCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Humanities/Arts 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the functional unit of a muscle fiber?a)Myofilamentb)Sarcomerec)Myofibrild)SarcoplasmCorrect answer is option 'B'. Can you explain this answer?.
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