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(c) Thin filament of myofibril contains 2 ‘F’ actins and two other proteins namely........... and ............

 tropomyosin,  troponin
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(d) In a muscle fibre Ca++ is stored in ........

Sarcoplasmic reticulum
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All mammals (except a few) have..........cervical vertebra.

7
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(b) The number of phalanges in each limb of human is ............


14
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Write differences between
(b) Red and White muscle 

Red muscle 

White muscle 

1. Myoglobin content is high 1. Myoglobin content is very less.
2. Appear red in colour. 2. Appear white in colour. 
3. Have aerobic respiration and utilise large amount of oxygen.  4. Carry out anaerobic process and produce energy.
4. Amount of sarcoplasmic reticulum is low. Amount of sarcoplasmic reticulum is high.
5. More number of mitochondria. 5. very few number of mitochondria. 
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