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Question

Fill in the blank spaces:

(a) All mammals (except a few) have ___ cervical vertebrae.

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

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

(d) In a muscle fibre Ca2+ is stored in ___

(e) ___ and ___ pairs of ribs are called floating ribs.

(f) The human cranium is made of ___ bones.

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Solution

(a) All mammals (except a few) have seven cervical vertebrae.

(b) The number of phalanges in each limb of a human is 14.

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

(d) In a muscle fibre, Ca2+ is stored in the sarcoplasmic reticulum.

(e) 11th and 12th pairs of ribs are called floating ribs.

(f) The human cranium is made up of eight bones.


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