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it moves via your capillaries, which transport other nutrients as well
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∙ 9y ago
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Is a muscle cell a specialized cell?
A muscle cell is specialized to contract and relax in unison with other muscle cells in a muscle tissue when you want to move a certain muscle(controlled by your cerebrum). I hope this answers your question! Ciao!
Does skeletal muscle need stimulation to contract?
Yes! Although we have total control over these muscles, they still need stimulation to contract. The difference with muscles that we don't control is that we decide if we want to make this stimulation.
Which processes use ATP as an energy source in skeletal muscle?
They are needed for contraction and also for relaxation: - For contraction: actin has active sites for binding to myosin, and myosin heads have ATPase activity (ATP hydrolization provokes a conformational change in the myosin head that pushes the actin filament and that is called the "power stroke), and at the end the sarcomere (sorry, google it) shortens. This repeats until calcium levels get lower again (because calcium allows actin to bind myosin, because there are other proteins - troponin, tropomyosin - that block this binding when calcium is not present). This is the cross-bridges cycle. - For relaxation: we have said that calcium ions are necessary for contraction, but we don't want our muscles to contract forever. That's why we need a mechanism to reduce intracellular calcium concentration. That mechanism is a calcium pump (called SERCA) that puts calcium ions again inside the "sarcoplasmic reticulum", which is a kind of storage compartment for calcium in skeletal muscle. This sarcoplasmic reticulum is very developed in skeletal muscle (in contrast with smooth muscle). SERCA pumping is also ATP dependent (active transport). As a curiosity, inside of the sarcoplasmic reticulum, calcium ions (Ca2+) bind to another protein called calcequesterin. They are needed also for processes intrinsic of excitable cells (aka neurons and muscle cells), such as the sodium-potassium pump (active transport)
Why is a pair of muscles required to move a bone?
Strictly speaking, it's not. It's just that, having moved it using one muscle, you might want to be able to move it back to where it was before, in which case you'll probably need a muscle that pulls the opposite direction.
How do you move your muscles?
When you want to move a muscle, your brain sends a message out to the muscle you want to move, and the muscle sends a message back to your brain that your moving it and where.
What are the dangers of selling house on contract?
If a seller and a buyer have already signed a contract, then you have to sell according to the contract. If you want to sell to someone else not on the contract, then you have to get out of the first contract.
Your boyfriend and you bought a car you want get out of the contract?
Cool story, bro. What's the question? You can't get out of a contract just because you want to.
What is the best way to handle a tenant that does not want to sign a contract?
If he wishes to remain a tenant and does not want to sign a contract, you can bring him to court.
How do you make a voulontary muscle move?
To move a voluntary muscle, you just want to do it. When you want to walk, the nervous system sends a signal to the brain and the skeletal muscle to move your legs. So you are making your leg move by voluntary muscle, which is skeletal muscle.
What actors and actresses appeared in I Want Muscle - 2011?
The cast of I Want Muscle - 2011 includes: Kizzy Vaines as herself
When does muscle growth stop?
when you want it to.
How can you get out of a teaching contract?
Setting aside or getting out of teaching contract requires the agreement of both parties. If one side in the contract does not want to negotiate, the contract must be honored.
