Question

the composition of the blood and the functions of the various components to describe the structure and function of each of the formed elements: normal valhnn 22. Which source of ATP is used last in a short duration exercise? C. Breakdown of lipids A Glycolysis. CreatirePhosphate E. None of the above. D. Existing ATP 23. Which is CORRECT about muscle fibers of skeietal muscle? A Fast oxidative fibers have the highest glycogen stores B. Slow oxidative fibers have the fastest speed of contraction C. Fast glycolytic fibers have the smallest fiber diameter. D. Fast glycolytic fibers are used in running a marathon. E. Siow oxidative fibers have the lowest glycogen stores 24. Which is cORRECT about load and muscle contraction? A The heavier the load the shorter the latent period. B. The heavier the load the faster the contraction. D. The heavier the load the smaliler the distance shortened. E. None of the above 25. Which is CORRECT about muscle lever systems? A Most lever systems of the body operate as first class levers. B. Contraction of the biceps brachi is an example of a second class lever. E. A third class lever has the fulcrum in between the load and the effort. D. A wheel barrow is an example of a third class lever. E. None of the above. 26. Which is FALSE about myasthenia gravis? B. Patients may have drooping eyelids A It is due to a shortage of acetylcholine. Patients have antibodies against the acetylcholine receptor. D. It is an autoimmune disease. E. None of the above. 27. Which is FALSE about muscular dystrophy? It affects a sarcolemmal protein. The most common form affects only males C. There is no cure D. It occurs in the elderly E. None of the above.

Answer 1

Creatine phosphate. Explanation: Existing ATP are finished (used) in 4 - 5 seconds only Then muscles use. Three pathways for ATP source i.e anaerobic aerobic and creative phosphate break down (from Glycolysis there is only 2, ATPs are directly gained.) (A) - fest oxidation fibre have the highest glycogen storage. (B) - slow oxidation fibres have lowest glycogen storage Explanation - other options are incorrect In marathon slow glycolytic (type - I) fibre are used - Largest diameter fibres are fastest - glycolytic fibres. (B) - Heavier the load fastest the contraction (E) - None of the above. Explanation: -most lever system of the body - Third class - Bicaps brachi is an example of - Third class Given description is of first class lever - i.e wheel barrow is - second class lever \r\n (A) It due to shortage of Act Explanation - There is no shortage of Ach antibody are formed against the Ach. Receptor .not Ach so impulse transmission is blocked.