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Which of the following ions help in muscle contraction?
- a)K+ and Mg++
- b)Na+ and K+
- c)Ca++ and Na++
- d)Ca++ and Mg++
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following ions help in muscle contraction?a)K+ and Mg++b)...
In muscle contraction, both Ca2+ and Mg2+ are used. Ca2+ helps in the formation of actomyosin by combining actin and myosin proteins. This will provide contraction in muscle. ATPase activity of myosin requires both Ca2+ and Mg2+. This helps in release of energy. This energy is used up in the contraction of muscle.
Most Upvoted Answer
Which of the following ions help in muscle contraction?a)K+ and Mg++b)...
Importance of Ca++ and Mg++ in Muscle Contraction
Muscle contraction is a complex process that involves the interaction of various ions within the muscle cells. Two important ions that play a crucial role in muscle contraction are Ca++ and Mg++.
Ca++
- Calcium ions (Ca++) are essential for initiating muscle contraction.
- When a muscle cell is stimulated, Ca++ is released from the sarcoplasmic reticulum within the cell.
- The binding of Ca++ to the protein troponin allows the protein tropomyosin to move away from the active binding sites on actin, enabling myosin to bind to actin and initiate muscle contraction.
Mg++
- Magnesium ions (Mg++) also play a role in muscle contraction by helping to regulate the activity of ATP, the energy source for muscle contraction.
- Mg++ is required for the ATPase activity of myosin, which allows for the breakdown of ATP to provide energy for muscle contraction.
Combined Role of Ca++ and Mg++
- While Ca++ initiates muscle contraction by allowing myosin to bind to actin, Mg++ helps in the actual energy production required for muscle contraction.
- Both ions work together to ensure that muscle contraction occurs efficiently and effectively.
Therefore, it is essential for muscle contraction that both Ca++ and Mg++ ions are present in the muscle cells.
Muscle contraction is a complex process that involves the interaction of various ions within the muscle cells. Two important ions that play a crucial role in muscle contraction are Ca++ and Mg++.
Ca++
- Calcium ions (Ca++) are essential for initiating muscle contraction.
- When a muscle cell is stimulated, Ca++ is released from the sarcoplasmic reticulum within the cell.
- The binding of Ca++ to the protein troponin allows the protein tropomyosin to move away from the active binding sites on actin, enabling myosin to bind to actin and initiate muscle contraction.
Mg++
- Magnesium ions (Mg++) also play a role in muscle contraction by helping to regulate the activity of ATP, the energy source for muscle contraction.
- Mg++ is required for the ATPase activity of myosin, which allows for the breakdown of ATP to provide energy for muscle contraction.
Combined Role of Ca++ and Mg++
- While Ca++ initiates muscle contraction by allowing myosin to bind to actin, Mg++ helps in the actual energy production required for muscle contraction.
- Both ions work together to ensure that muscle contraction occurs efficiently and effectively.
Therefore, it is essential for muscle contraction that both Ca++ and Mg++ ions are present in the muscle cells.
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Which of the following ions help in muscle contraction?a)K+ and Mg++b)Na+ and K+c)Ca++ and Na++d)Ca++ and Mg++Correct 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 Which of the following ions help in muscle contraction?a)K+ and Mg++b)Na+ and K+c)Ca++ and Na++d)Ca++ and Mg++Correct 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 Which of the following ions help in muscle contraction?a)K+ and Mg++b)Na+ and K+c)Ca++ and Na++d)Ca++ and Mg++Correct answer is option 'D'. Can you explain this answer?.
Which of the following ions help in muscle contraction?a)K+ and Mg++b)Na+ and K+c)Ca++ and Na++d)Ca++ and Mg++Correct 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 Which of the following ions help in muscle contraction?a)K+ and Mg++b)Na+ and K+c)Ca++ and Na++d)Ca++ and Mg++Correct 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 Which of the following ions help in muscle contraction?a)K+ and Mg++b)Na+ and K+c)Ca++ and Na++d)Ca++ and Mg++Correct answer is option 'D'. Can you explain this answer?.
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