Muscles

Muscles have an important role in our bodies! Muscles help you do lots of things, such as blink an eye, swallow, and digest your food. Muscles also help you breathe, lift an arm, take a step, and even have your heart beat so your blood can circulate. If you did not have muscles you could not move. Muscles can make pulling forces. There are opposing teams of muscles that give you a full range of movement. Your brain and your nervous system control muscles. Your body needs fuel and you get it from food that you eat. The muscles move thanks to tiny electrical pulses that travel along motor nerves. You have two teams of muscles in your body. Simplest joints have two movements and they are bending and straightening. One team pulls to bend and the other team pulls to straighten your joint. Shortening muscles make various parts of your body move. When your muscle Muscles are formed differently depending on the job they have. When your muscles contract they look like they change size but they don’t. Muscles are made of quite a few things. Cells make up muscle fibers and make up the muscles. Each muscle fiber is about the size of your hair. Organs, glands, intestines, and our stomach are made of muscle. Some people have bigger muscles than others do; for example people who box, dance ballet, or perform gymnastics might have muscles that are more noticeable. Some muscles are smaller than others are and they have less strength. Some muscles are bigger than others are and they have more strength. When you use weights or use your muscles a lot, they grow and become more noticeable. That is why athletes usually have big muscles. There are many sizes of muscles. They also come in a great variety of shapes. There are three kinds of muscle, and they are skeletal, smooth, and cardiac muscles. The skeletal muscle is attached to your bones and helps you move. The smooth muscle is found in the walls of your stomach and in some of your blood vessels to help control the flow of blood around your body. Your cardiac muscle is found only in your heart. The cardiac muscle pushes out blood into your arteries. All muscles are organs.