NEET Exam > NEET Questions > What is sarcomere? [2001]a)Part between two H...
Start Learning for Free
What is sarcomere? [2001]
- a)Part between two H-lines
- b)Part between two A-lines
- c)Part between two I-bands
- d)Part between two Z-lines
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
What is sarcomere? [2001]a)Part between two H-linesb)Part between two ...
Darks bands on the myofibril form A-band. Middle part of A-band contains light zones-Hensen line (H-lines). Light band on myofibril is called I-band. Middle part of I-band contains Z-lines. Sarcomere is part between two Z-lines.
Most Upvoted Answer
What is sarcomere? [2001]a)Part between two H-linesb)Part between two ...
Understanding Sarcomere
The sarcomere is the fundamental contractile unit of striated muscle tissue, playing a critical role in muscle contraction.
Structure of Sarcomere
- Z-lines: The sarcomere is defined as the segment between two Z-lines. These lines are crucial as they anchor the thin filaments (actin) and delineate the boundaries of each sarcomere.
- A-band: This region contains the thick filaments (myosin) and overlaps with the thin filaments. It appears dark under a microscope due to the density of these proteins.
- I-band: This section contains only thin filaments and is lighter in appearance. The I-band spans across two adjacent sarcomeres and extends from the Z-line to the start of the A-band.
Why Option D is Correct
- Definition: The sarcomere is specifically the area between two Z-lines. This demarcation is essential for understanding how muscle fibers contract and how they are organized.
- Functionality: During muscle contraction, the sarcomeres shorten, pulling the Z-lines closer together, which leads to the overall shortening of the muscle fiber.
- Importance in Physiology: The arrangement of sarcomeres aligns perfectly for coordinated muscle action, enabling efficient movement and strength.
Conclusion
The correct answer is option 'D' because the sarcomere is distinctly defined by the space between two Z-lines, making it the essential unit of muscle contraction. Understanding this structure is vital for students in fields related to biology and medicine, particularly in contexts like the NEET examination.
The sarcomere is the fundamental contractile unit of striated muscle tissue, playing a critical role in muscle contraction.
Structure of Sarcomere
- Z-lines: The sarcomere is defined as the segment between two Z-lines. These lines are crucial as they anchor the thin filaments (actin) and delineate the boundaries of each sarcomere.
- A-band: This region contains the thick filaments (myosin) and overlaps with the thin filaments. It appears dark under a microscope due to the density of these proteins.
- I-band: This section contains only thin filaments and is lighter in appearance. The I-band spans across two adjacent sarcomeres and extends from the Z-line to the start of the A-band.
Why Option D is Correct
- Definition: The sarcomere is specifically the area between two Z-lines. This demarcation is essential for understanding how muscle fibers contract and how they are organized.
- Functionality: During muscle contraction, the sarcomeres shorten, pulling the Z-lines closer together, which leads to the overall shortening of the muscle fiber.
- Importance in Physiology: The arrangement of sarcomeres aligns perfectly for coordinated muscle action, enabling efficient movement and strength.
Conclusion
The correct answer is option 'D' because the sarcomere is distinctly defined by the space between two Z-lines, making it the essential unit of muscle contraction. Understanding this structure is vital for students in fields related to biology and medicine, particularly in contexts like the NEET examination.
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
Question Description
What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer?.
What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer?.
Solutions for What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What is sarcomere? [2001]a)Part between two H-linesb)Part between two A-linesc)Part between two I-bandsd)Part between two Z-linesCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup