Higher Secondary level Zoology kernels for your kind perusal.
2. The diameter of muscle fibre varies from ___. a) 10 to 100 microns b) 20 to 200 microns c) 5 to 10 microns d) 60 to 80 microns
3. ‘A’ band contains thick filament formed of ____. a) Actin b) Myosin c) Lipids d)Troponin
4. The length of the thick filaments in ‘A’ band is ____. a) 3.5 microns b) 1.5 microns c) 2.5 microns d) 4 microns
5. ‘I’ band contains thin filaments formed of _____. a) Myosin b) Actin c) Lipids d)Troponin
6. Less dense region at the central region of ‘A’ band is ___. a) Z line b) H Zone c) M Zone d) N Zone
7. The diameter of the thin filaments in ‘I’ band is _____. a) 50'A b) 60'A c) 70'A d) 40'A
8. Sliding-filament hypothesis was proposed by ___. a) Hippocrates b) Aristotle c) Hanson & Huxley d) Landsteiner &Wiener
9. _________ induces muscle fibre for contractions. a) Ca+ ions b) Dystropin c) Acetyl Choline d) Troponin
10. The maximum strength of contraction is _____. a) 25 kg/sq.cm b) 3.5 kg/sq.cm c) 4.5 kg/sq.cm d) 1.5 kg/sq.cm
11. Muscle fatigue is due to _____. a) Fail to oxidation of glucose b) Glycogen depletion c) gluconeogenesis d) Utilization urea
12. The skeletal muscle tone is the result of nerve impulses coming from ___. a) Medulla oblongata b) Cerebrum c) Cerebellum d) Spinal cord
13. Isometric exercise increases the thickness of the muscle fibres and their ability to store __. a) Glucose b) Lipids c) Glycogen d) Minerals
14. Myasthemia gravis disease can be cured by removal of the ____ gland with plasmaphoresis. a) Pineal b)Thyroid c) Thymus gland d) Adipose tissue
15. Myasthemia gravis most often affects women between the ages of _____. a) 20 and 30 b) 30 and 40 c) 15 and 25 d) 40 and 50
16. During the muscle contraction Ca+ ions are released from – a) Sarcolemma b) Sarcoplasmic reticulum c) Nerve d) Myosin
17. The number of Skeletal muscles of an human is approximately -- a) 206 b) 300 c) 500 d) 700
18. Approximately skeletal Muscles constitutes ___ % of our body. a) 20 b) 30 c) 40 d) 50
19. A small segment of the myofibril is called as ______. a) Sarcomere b) Sarcoplasmic reticulum c) Actin d) Myosin
20. . Diameter of the each myofibril is from ___ to ___ microns. a) 10, 15 b) 20, 30 c) 5, 10 d) 1, 3
21. Due to nervous induction ___ is released at the Neuro Muscular junction. a) Pepsin b) Dystropin c) Acetyl Choline d) Troponin
22. The overall process of controlling muscle contraction is called _____ a) muscle tone b) rigor mortis c) fatigue d) excitation
23. Back pain is a common problem, caused by _____. a) muscle tone b) muscle pull c) muscle fatigue d) torsion
24. _____ exercise is best for developing large muscles. a) Isometric b) Isotonic c) muscle fatigue d) torsion
25. _____ exercise is best for cardio vascular system. a) muscle fatigue b) Isometric c) torsion d) Isotonic
Score = Correct answers:
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