Skeletal muscle is striated and under voluntary control. Cardiac muscle is also striated but under involuntary...
Skeletal muscle is striated and under voluntary control. Cardiac muscle is also striated but under involuntary control. Smooth muscle is not striated and is under involuntary control. Explain why we see striations in both skeletal muscle and cardiac muscle but not in smooth muscle. Also explain what it means to be under voluntary or involuntary control.
Homework Answers
Striations are formed by the arrangement of actin and myosin filaments which form alternating dark and light bands.A and I bands are present.A band is anisotropic band and I band is isotropic band. Smooth muscles have different arrangement of myofibrils so they lack striations.Skeletal muscles are more prominently striated than cardiac muscle.
Voluntary means under a person control he can control muscle action whenever he wants to stop he can stop action of muscle whenever he wants.
Involuntary means they are not under control of a person they even work even when a person sleeps or take rest
Smooth muscles -examples-respiratory tract,genital tract,gut
Cardiac muscles work continuously without stop from birth till death.
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Skeletal muscle is striated and under voluntary control. Cardiac
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Compare the rates of muscle contraction and relaxation of skeletal, smooth, and cardiac muscles. How do...
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