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Which of these is found at the two ends of a sarcomere?(a) ‘H’ line(b) ‘A’ line(c) ‘M’ line(d) ‘Z’ lineThis question was posed to me in semester exam.My doubt stems from Locomotion & Movement topic in division Locomotion and Movement of Biology – Class 11

Answer»

The correct choice is (d) ‘Z’ line

Easiest explanation: The two ends of a sarcomere or a contractile UNIT of a muscle is marked by the presence of ‘Z’ lines. It CONTAINS one whole ‘A’ band or anisotropic band and half of an ‘I’ band or ISOTROPIC band.



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