NEET Biology question
Which of the following statements are false regarding the muscle structure? I. In the centre of each I-band is an elastic fibre (Z-line) which bisects it. II. Thin filament are firmly attached to the Z-line. III. M-line is a fibrous membrane in the middle of A-band. IV. A sarcomere comprises one full A-band and two half I-bands.
Answer: (D)
Solution
All four statements are in fact accurate descriptions of sarcomere structure, since the Z-line does bisect the I-band and anchors the thin filaments, the M-line is indeed a fibrous membrane in the middle of
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