NEET Zoology Muscle Contraction MCQ Question
Fill in the blank spaces and select option which contain true answer of blanks:
(A) All mammals (except a few) have ________ 1 ________ cervical vertebra.
(B) The number of phalanges in each limb of human is ________ 2 ________.
(C) Thin filament of myofibril contains 2 'F' actions and two other proteins namely, ________ 3 ________ and ________ 4 ________.
(D) In a muscle fibre Ca²⁺ is stored in ________ 5 ________.
1 - 7;⁴⁻ Tropomyosin;⁵⁻ Mitochondria
2 - 14;³⁻ Troponin;⁴⁻ Globulin
4 - 2; 14;³⁻ Troponin;⁵⁻ Sarcoplasmic reticulum
Correct Answer
Detailed Explanation
Most mammals have 7 cervical vertebrae. Humans have 14 phalanges per limb. Troponin and tropomyosin are proteins in thin filaments. Calcium is stored in the sarcoplasmic reticulum.
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