How many muscles are in my body ?

The human body
The human body contains 206 organs, 22 of which are found in the human skull. As for the muscles, the human body contains 620 different muscles, the strongest muscle mass between the jaws, and the largest muscle thigh, muscle is a strong and flexible tissue makes the body parts moving.

In everyday life, a person uses muscles in different types of movement. When eating, for example, the jaw muscle is used to chew food, and other muscles help it to stir food inside the stomach or intestines, making the chest muscles breathing possible. The muscles cover the entire human body, and when the growth increases the size of the muscle, and in adulthood become the muscles form half of the body weight.

Types of muscles
Muscles are divided into two basic types: structural muscles, and smooth, and the heart occupies its own muscle combining the structural muscles and smooth.

Structural muscle
Musculoskeletal Functions
Of the many tasks of skeletal muscle:

• Works on the cohesion of the bones of the structure.
• Give shape and support.
• Move the body.
• Structural muscles form the bulk of the legs, forearms, abdomen, chest, neck, and face.

Structural muscle formation
The muscles are made up of cells called fibers. The fibers are long cylindrical, and if viewed inside the microscope, they will appear in a dark package that will exchange with a bright package called the blueprints. The fibers are joined together by connective tissue, and the end of the muscle with the bone is associated with a strong connective tissue as well.

How skeletal muscle works
Structural muscles work in two ways: they work in pairs:

• Lumbar: where you bend the joint and come close to the body.
• Extensibility: It reverses flexor function.

For example, the biceps in the front of the humus are flexed, and when the muscle contractes, the elbow flexes and the forearm and hand move to the contagious area. The triceps are located behind the humerus and are extensible. When pulled, the elbow straightens and the forearm moves away from the elbow. At the same time, the biceps relax so that the triceps can attract them back to the original. Sometimes involuntary muscles are called; they move involuntarily under conscious control, and skeletal muscles may move involuntarily without conscious control. For example, involuntary movement occurs when a person moves his hand away from a hot body automatically without thinking about it.

Smooth muscle
These muscles are smaller than skeletal muscle fibers and contain one nucleus.

Places of smooth muscle
Smooth muscles are found to be less than skeletal muscles in the body and are found in the following places:

• The walls of the stomach, intestines, blood vessels and bladder.
• Structural muscle in unplanned smooth muscle fibers.

How smooth muscles work
The way smooth muscles work is different from skeletal muscles. They work as follows:

• It acts slowly and spontaneously with a natural rhythmic contraction followed by relaxation, and in this way the body's various processes move.
•  The smooth muscles are known as involuntary muscles because they are not under the conscious control of the brain.

Cardiomyopathy
It is the muscle that makes up the heart and works to keep the heart pumping continuously.

How the heart muscle works
When its cells contract, blood drives the arteries outside the heart, and blood circulates everywhere in the body, collecting food for the cells. The myocardium combines the characteristics of the skeletal muscle and the smooth muscle; it contains schematics such as skeletal muscle, and each muscle cell contains a single nucleus that automatically contracts, such as smooth muscle fibers.

Effect of sport on muscles

• When a person raises several weights for a short time each day, the muscles grow more; this exercise makes the muscle nucleus increases in the production of thick and thin threads.
• When a person performs a regular exercise for a long time, such as swimming for 30 minutes, the muscle fibers increase their ability to produce the energy they need to maintain such an effort.

Sometimes the muscles are confused by normal muscle tension; sometimes a painful muscle strain occurs when a long-term exercise is performed. Muscle tension of the skeletal muscles involves muscular contraction. No one knows exactly why such muscle tension occurs, but it is likely that the cause is more or less severe It is necessary in salt salts surrounding the muscle fibers.

With appropriate rest and nutrition the body can correct the condition to stop muscle strain. Muscle tension can occur in the smooth muscles of the stomach and intestines, and doctors use heat, massage and medication in the treatment of muscle strain. Tough muscle work can cause skeletal muscle rupture, which can last up to four days in severe cases, possibly due to muscle and connective tissue damage, and with appropriate exercise, the body and muscles can adapt to hard muscle work and greatly reduce the risk of tissue damage.

Sport force and lifting weights
The sport of strength is a sport that needs a great muscle effort; competition depends on the amount of weight mobile, so lifting weight comes from muscle strength. The athletes train daily to carry weights and try to increase them, with a diet that helps restore and build muscle after training.

Bodybuilding
Sports bodybuilding is a sport in which the competition is in terms of size and shape of the muscles, training players include weight load and do certain exercises to amplify each muscle separately and increase the detail and clarity of corners, and players need an integrated diet for muscle rehabilitation and construction, but at the same time avoid increasing the proportion of fat In the body to keep the muscle visible and clear.

Muscular Diseases

• Muscular atrophy: This disease attacks the nervous system and nerves that alert the muscles, and leads to the damage of these nerves, and thus contract muscle gradually and become weak, for example, neuromuscular disease.
• Muscular dystrophy: Muscle weakness occurs because the muscle itself does not work as it should, and some muscle disorders are characterized by gradual degeneration of the skeletal muscles.