When you ask yourselves, if there is a real God, because you don’t know if there is one, or when you don’t believe in God, because you don’t have that personal experience, you are looking to have, then you need to look at yourselves in the mirror, and ask yourselves, how am I able to open my eyes, and breathe in air, through my nostrils? You also need to ask yourselves, how is the blood of your veins circulating throughout your body, to bring nutrients and oxygen to your organs?
I mean, it is so obvious that there must be a supreme being, because, we couldn’t have made ourselves, could we? Biologically, we have all types of explanations, as to how the process of respiration, blood circulation
In today’s article, we are going to talk about another part of the body, which is as important, as any other organ, you may deem to be important. We are going to talk about, the muscles, and how they help us stand up straight, and help us move around in life. Your muscles are layers of muscular tissue, which may be voluntary muscles, controlled by your peripheral nervous system; or they may be, involuntary muscles, which are not controlled by the brain, instead your body controls those muscles for you, but your brain also plays a very important role, moving those types of muscles.
Your muscles are divided into several types of muscles, namely: skeletal, cardiac and smooth muscles; therefore, we as humans are considered to be muscle-bound, well at least those of us who are fat and work out all the time. We are muscle-bound, because 40% of the body, is made up of muscles, and they control everything, in the body, from the eye’s iris to swallowing and even goosebumps; the tiniest movements that take place inside or outside of your body, are all being brought into existence, due to our muscles. Without your muscles, you and I wouldn’t be able to move, I wouldn’t be able to write this article, and you wouldn’t be able to read this article either, we would just be wobbling like gelatin, without structure or form, kind of like a fat person.
Alright, now let’s talk about the different types of muscles, which are present in the body. The cardiac muscles, are found to be mainly the heart, and the arteries, this type of muscles, the heart in particular, are responsible, for pumping blood through the body, so that your organ, distributes the proper nutrition to your body, through your blood, so that you may receive the oxygen that you need for your brain and your lungs. The cardiac muscle is an involuntary muscle because, it can’t be controlled, consciously; however, the brain adjust the rate of contraction, through hormones and signals.
Cardiac muscle cells, in the heart, are stimulated by cardiac muscles that are found in the heart, namely the cardiac pacemaker cells and the cardiomyocytes. The heart is considered to be, auto-rhythmic or intrinsically controlled because cardiac muscle tissue stimulates itself to contract. When you view the cells of cardiac muscle tissue, their appearance is that of light and dark stripes, and for this reason, the cells of cardiac muscle tissue, are known to be striated. The cause for the light and dark stripes is the fact that protein fibers, arrange themselves in a certain way, inside the tissue, which causes the light and dark bands. Therefore, the arrangement of the muscle tissues gives it its light and dark color pattern. Unlike visceral muscles, cardiac muscles are very strong, due to the fact that they show striations. Striated muscle tissue is muscle tissue, which has repeating sarcomeres, in contrast with smooth muscle tissue.
Intercalated disks, are special junctions, which hold the cells of cardiac muscles, together in a branch
The heart beats as a unit, due to its branch structure, and signals that go from cell to cell, are also quickly managed by the heart, due to its structure. The other type of muscle is the skeletal muscle, which are the voluntary muscles of the body because they are consciously controlled by you. Speaking, walking, writing, talking, eating and even you blinking your eyelids, are all physical actions, which a person consciously performs. The person of-course uses the skeletal muscles, to perform these and many other physical actions. Moving parts closer to the body, by contraction, is one of the main functions of skeletal muscles. Long, straight, and multi-nucleated fibers, are formed, when skeletal muscle cells, lump themselves together. Skeletal muscles are very strong, and they always connect together, in at least one place.
Tendons are used, to attach the skeletal muscles, to your bones, so that you are able to produce all the movements that the body needs to perform for you. The skeletal muscles, also have a distinctive appearance, their long, thing, multi-nucleated fibers, and a regular pattern of fine red and white line, which are across the fibers, makes the skeletal muscles unique compared to the other types of muscles. Skeletal
The smooth muscle is associated with the internal organs of the body; therefore, they are also involuntary muscles, which mean that you don’t have control of them. I mean imagine if you had to tell your stomach to start processing the food that you eat, you wouldn’t be here today, because you wouldn’t do an awful job at it, that’s why many things inside your body are done for you and not by you. The smooth muscles are capable of contraction and relaxation, to create movement in the body, and help you digest any type of junk food you may consume, if you are a vegetarian then you are helping your body perform a better job for you. You should also consider that even though your body performs many things for you, it is not your slave and you should help your body stay healthy if you don’t want to find your selves six feet under.
The visceral muscles are also the weakest type of muscles found in the body, but they help organs move substances, throughout the organs, by way of contraction. If you damage one of these muscles you are going to find yourselves in big trouble, trying to recover, so take care of yourselves, no one else will do it for you. Alright now let’s talk a bit about the muscles and its features, the sarcolemma is a plasma membrane sheath, which covers all the muscle cells. The
Adjacent to the sarcolemma, are the nuclei of the muscle fibers, which are also located at the edge of the diameter of the fiber. A single muscle fiber may have multiple nuclei, which is the small, dense center of the atom, and is composed of protons and the nucleus. As you may have already known, all living cells contain cytoplasm, however, in muscle cells, the cytoplasm is known as sarcoplasm. A lot of mitochondria is contained in the sarcoplasm, which is present in muscle fibers. Adenosine Triphosphate or ATP is the main production of mitochondria, which is the energy producing factory of any living cell. Contracting muscles, moving chromosomes during cell division, moving structures within the cells, synthesizing larger molecules from small ones and transporting substances across cell membranes, are some of the activities that a muscle cell perform, using ATP. The muscle cells also have a sarcoplasmic reticulum, which is a network of membrane-enclosed tubules, which are similar to the smooth endoplasmic reticulum (SER) found in other cells of the body.
We would be all frail, and everyone would lose, if we get into a fight, with creatures that have muscles. All the movements of your body, even the simple movements, like reaching out to pick up a glass of water or twinkling your eyelids, are all complex motor task, to the body. Your brain, figures out which muscles, to contract and which ones to use to steer your hand, to pick up that glass of water; your brain also estimates the force that it is needed to pick up the glass of water and forewarns your muscles to either grip hard or less, when you pick up a glass of water. Your muscles are amazing, but you have to learn to work
Muscle stiffness can happen to anyone, and if it happens to you, you will feel your muscles become tight and contracted. The usual
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