How many muscles in the human body

How many muscles are present in the human body?

What are muscles in human body?


The muscular system consists of a group of specialized cells called muscle fibers, and in fact, muscles connect to a number of other parts of the body to be able to perform their function, which are the bones, internal organs, and blood vessels, and the main function of muscles is to contract with the aim of the movement. Therefore, it can be said that the various body movements are caused by muscle contraction, in cooperation with the joints and the skeletal system, including walking and jogging, and it is worth noting that muscle contraction helps to perform several other functions in the body other than movement, such as taking a certain position of the body. Such as standing or sitting, the stability of the joints, and the production of heat through the metabolic processes that occur in the muscles, knowing that the production of heat during these processes is important to maintain the body temperature within acceptable limits.

By completing talking about the role of muscles, it is indicated that healthy muscles allow a person to move freely and give him the strength necessary to enjoy various exercises, including swimming. As is known, exercise contributes to maintaining a healthy heart, and performing the required tasks such as sweeping carpets and mowing the lawn. Muscles play an important role in giving the joints the desired shape, for example, if the muscles around the knee are weak, the chance of injury and injury to the knee increases, and strong muscles help maintain the required body balance.

The number of muscles in the human body

The muscles of the body make up approximately 40% of the total body weight because the number of muscles in the human body exceeds 600 muscles, and by talking about muscles, we show that each muscle consists of thousands of muscle fibers. Each muscle fiber is 40 mm long so that it consists of small strands of fibers Smaller in size are known as fibrils. Muscle strength depends mainly on the number of fibers that make up it, as for muscle contraction it is under the command and control of nerves. For muscle fuel, it is simply adenosine triphosphate resulting from the body's metabolism of food, where it is used. Muscle adenosine triphosphate to produce kinetic energy.

Types of muscles in the human body

There are three types  of muscles in the human body, and they are briefly explained below:

  • Skeletal muscles: It is also known as the striated muscles because they appear under the microscope in the form of threads. That man controls its contraction and relaxation. In fact, the muscular system is the largest organ in the body, making up 45-55% of body mass.
  • Smooth muscles:  These muscles are also known as involuntary muscles, because their movement (contraction and extension) is not subject to human control, and they are present in blood vessels such as arteries, and many internal organs such as the gastrointestinal tract and the uterus, and these muscles are arranged in layers that contract in a specific order.
  • Heart: muscle is similar to these muscles with the skeletal muscle. They appear in the form of filaments under the microscope, but it is different from that heart muscle constrict and flattens without human consciousness and perception.

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