Advertisements
Advertisements
प्रश्न
What is the source of energy for muscle contraction?
Advertisements
उत्तर
The source of energy for muscle contraction is ATP (Adenine Triphosphate). An enzyme called myosin ATPase present on the head of the myosin molecule breaks down into ADP and inorganic phosphate in the presence of magnesium and calcium ions and releases energy in the head of the myosin.
i.e., ATP → ADP + Pi + Energy
APPEARS IN
संबंधित प्रश्न
Describe the important steps in muscle contraction.
Answer the following question.
How is the structure of sarcomere suitable for the contractility of the muscle? Explain its function according to sliding filament theory.
Answer the following question.
How does the structure of actin and myosin help in muscle contraction?
Name the filaments present in the sarcomere.
Explain the sliding-filament theory of muscle contraction.
Which are involved in muscle contraction?
Exchange of calcium between bone and extracellular fluid takes place under the influence of certain hormones. What will happen if more of Ca++ is in extracellular fluid?
Exchange of calcium between bone and extracellular fluid takes place under the influence of certain hormones. What will happen if very less amount of Ca++ is in the extracellular fluid?
Rahul exercises regularly by visiting a gymnasium. Of late he is gaining weight. What could be the reason? Choose the correct answer and elaborate.
Radha was running on a treadmill at a great speed for 15 minutes continuously. She stopped the treadmill and abruptly came out. For the next few minutes, she was breathing heavily/fast. Answer the following questions.
What happened to her muscles when she did strenuously exercised?
Calcium ion concentration in blood affects muscle contraction. Does it lead to tetany in certain cases? How will you correlate fluctuation in blood calcium with tetany?
Explain sliding filament theory of muscle contraction with neat sketches.
Discuss the role of Ca2+ ions in muscle contraction. Draw neat sketches to illustrate your answer.
How does a muscle shorten during its contraction and return to its original form during relaxation?
