Advertisements
Advertisements
प्रश्न
Rahul exercises regularly by visiting a gymnasium. Of late he is gaining weight. What could be the reason? Choose the correct answer and elaborate.
पर्याय
Rahul has gained weight due to accumulation of fats in body.
Rahul has gained weight due to increased muscle and less of fat.
Rahul has gained weight because his muscle shape has improved.
Rahul has gained weight because he is accumulating water in the body.
Advertisements
उत्तर
Rahul has gained weight due to increased muscle and less of fat.
Explanation:
Rahul has gained weight due to increased muscle and less fat because exercising regularly can cause an increase in the amount of sarcoplasm that is the thickness of myofibrils increases along with an increase in protein synthesis and mitochondria.
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?
ATPase enzyme needed for muscle contraction is located in ______.
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?
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?
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.
How did her breathing rate change?
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?
