Muscles are essential to the normal operation of your body because they help you control movement and posture. You use them every day, without fail, because without them, you would not be able to exert force on what you are doing. By adjusting the length of the muscle, also the tension, your muscles are able to contract.
You have three different types of muscles-the cardiac muscle, smooth muscle, and skeletal muscle. These muscle types control the whole of your body. The cardiac muscle manages the blood flow, oxygen, and electric signals, because it is responsible for the beating of your heart. Your cardiac muscle functions involuntarily and so you have nothing to do about it. The smooth muscle pulls the hollow structures of your body, which is also an involuntary action. And of course, the skeletal muscle, which comprises the most muscles of your body, supports your entire body. You need these muscles because without them, you would not be able to move, you would just be immobile.
Many people are confused as to how muscles work. In fact, muscles can only pull or contract (and not push). Every day, muscles work in pairs in order for a person to bend, pick things up, and do a lot of things. In doing these things, a muscle inside the body lengthens, and the other shortens. The one that shortens is the one that contracts, also called as the agonist. While the muscle that lengthens is called as the antagonist. Well, the muscles are designed to only contract, and not to push. This is why muscles cannot push.
The muscles would not be able to pull if the two protein molecules are not present: the actin and myosin. These two are arranged from the end to end of muscle cells, and so they provide the muscles striated appearance. Muscles help the joints in order for you to move, and also perform other actions as well and transmit it to other parts of the body, so you can achieve what you want to do.
Muscles contract or pull when an electrical impulse from a part of your body, say the brain or other organs, stimulates the muscle at the neuronal synapse. The electrical impulse then becomes a chemical signal, which results at the neuron’s terminal, while it activates the chemical signal by releasing neurotransmitters.
There are just so many things to learn about muscles. You have to maintain them, do your best to protect yourself so that you would be strong in the long run. Of course, you need to understand why your muscles contract because you use them in your everyday life. To learn more about muscles, have a chat with your local manual therapist, such as your trusted osteopath or physiotherapist.