The functional unit of contraction in a muscle fiber, located between two successive Z-lines, is called a:
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Correct answer: Sarcomere
A sarcomere is the segment of a myofibril between two consecutive Z-lines. It is considered the basic functional and structural unit of muscle contraction.
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More Muscle Structure questions
- The 'H-zone' in the skeletal muscle fiber is defined as:
- Which of the following is a complex protein that masks the active binding sites for myosin on the actin filaments in a resting state?
- Each myosin (thick) filament is a polymerized protein made of monomeric units called:
- The globular head of meromyosin possesses binding sites for:
- Which of the following muscle types would be found in the wall of the alimentary canal?
- Which protein is composed of two 'F' (filamentous) helically wound to each other?