reason.1. muscles contain contractile protenis. (2) muscles of heart are invduntary.
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reasons:
Three types of proteins form myofibrils:
1)contractile,
2) regulatory,
3)structural.
Contractile proteins generate force formuscle contraction.
The twocontractile proteins in myofibrils are actin which is part of thin filament and myosin, which is part of the thick filament
(ii) reasons :
*These muscles push materials like food or blood through organs.
*Unlike skeletal muscle, smooth muscle can never be under your control.
*Cardiac muscle is also an involuntary muscle, found only in the heart.
* The cardiac muscle fibers all contract together, generating enough force to push blood throughout the body.
Three types of proteins form myofibrils:
1)contractile,
2) regulatory,
3)structural.
Contractile proteins generate force formuscle contraction.
The twocontractile proteins in myofibrils are actin which is part of thin filament and myosin, which is part of the thick filament
(ii) reasons :
*These muscles push materials like food or blood through organs.
*Unlike skeletal muscle, smooth muscle can never be under your control.
*Cardiac muscle is also an involuntary muscle, found only in the heart.
* The cardiac muscle fibers all contract together, generating enough force to push blood throughout the body.
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