The protoplasmic segment of a striated muscle fibre is termed as
A
Sarcoplasm
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B
Sarcomere
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C
Neuromere
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D
Metamere
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Solution
The correct option is A Sarcoplasm Sarcomere is the smallest contractile unit of striated muscle fibre. Sarcomere occurs as repeating units along the length of a myofibril, occupying the region between Z lines of the myofibril.
Sarcoplasm is the cytoplasm of a muscle fibre. It is a water solution containing ATP and phosphogens, as well as the enzymes of intermediate and product molecules involved in many metabolic reactions.
Neuromere is a metameric segment of CNS.
Metamere is a linear series of primitively similar segments into which the body of higher invertebrate and vertebrate is divisible.