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Question
During muscular contraction, the myosin head binds to the exposed active sites on actin to form a
During muscular contraction, the myosin head binds to the exposed active sites on actin to form a
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Solution
The correct option is C Cross bridge
(C) Cross bridge:
Sliding filament theory:
According to sliding filament theory, thin filaments called actin filaments slide over myosin filaments (thick filaments). The myosin head binds to the exposed active sites on actin forming a cross bridge. This process utilises ATP. When the myosin head binds and pulls at the actin filament, the latter comes closer to the M-line (centre of A band).
The cycle involves a sequence of events involving the thick and thin filaments of a muscle that result in muscle contraction.
Final answer: (C) Cross bridge
(C) Cross bridge:
Sliding filament theory:
According to sliding filament theory, thin filaments called actin filaments slide over myosin filaments (thick filaments). The myosin head binds to the exposed active sites on actin forming a cross bridge. This process utilises ATP. When the myosin head binds and pulls at the actin filament, the latter comes closer to the M-line (centre of A band).
The cycle involves a sequence of events involving the thick and thin filaments of a muscle that result in muscle contraction.
Final answer: (C) Cross bridge
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