Locomotion and MovementMedium
Question
What is sarcomere ?
Options
A.Part between two H-lines
B.Part between two A-lines
C.Part between two I-lines
D.Part between two Z-lines
Solution
Huxley gave the fine structure of dtraited muscle fibre or myofibril. Each myofibril is made up of A-bands (dark band- anisotropic and light bands (I-bands = isotropic). These two bands are made up of myosin and actin filament respectively. Each I-band is divided into two equal halves by a thin, fibrous and transverse zig-zag partition, called Z-bamd or Z- disc or Krause′S membrane.
The patr of the myofibril between two successive Z-lines function as a contractile unit called sarcomere.
The patr of the myofibril between two successive Z-lines function as a contractile unit called sarcomere.
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