Striated Muscle?

Question

What would happen if smooth muscles were attached to the skeleton instead of skeletal muscles?
how would movement be affected?

Answer 1

The striations of skeletal muscle are due to the high organization of the myofilaments actin and myosin. They are organized so that shortening of the muscle fiber occurs in only one direction to produce movement of the joint. Smooth muscle also uses actin and myosin filaments, but the organization is more random. When the muscle contracts, it shortens in all directions.
Therefore, if smooth muscle replaced skeletal muscle at bony attachments, the strength of the joint movement would be decreased because the muscle does not contract in one direction to produce force.

Answer 2

actually i believe that the movt depends on the kind of stmulus and the neural control exerted on the muscle rather than the kind of muscle present.so if the 'smooth muscle' present is eventually innervated by the cns through alpha neurons in the spinal cord, i think it might still be voluntary but the strength and dexterity of the movts will be grossly diminished as the smooth muscle just doesn't have the mechanism to facilitate the movt of the the skeleton. the skeletal muscle developed with the development of the skeleton on the evolutionary scale.

Answer 3

I disagree with the first two answers. The diaphragm is a smooth muscle attached to your skeleton. And it is also under voluntary control. Don't confuse voluntary control with the overriding mechanisms to manage blood pH. Smooth muscle gets tired less easily, but it is hard to coordinate and precisely control because of how it is structured and enervated. However, one thing is certain, people wouldn't be able to pump iron and develop "Arnold" -type musculature.

Answer 4

The problem would be 1. can't control your movement any more cause smooth muscle is self-determined 2. not as potent as it was in that smooth muscle does not contain as much glycogen as striated muscle; glycogen is metabolized through glycolysis to supply an acute movement with sufficient power.

Answer 5

The striated muscular tissues are skeletal, voluntary muscular tissues. they are made out of bundles of parallel, streaklike fibers below wakeful administration. the only exception is the muscle of the midsection, that's striated, yet is involuntary. you're mixing apples and oranges once you're asking approximately sarcoplsmic, transverse tubule, advert infinitum... Sarcoma has to do with maximum cancers.

Answer 6

You'd be a complete couch potato - only able to move when you absolutely needed something to survive - like pushing a button on the remote control when your eyes are seeing crap on the TV.

Answer 7

you would not be able to consciously move the part of your body you wanted to move, it would happen involuntarily....