Most of the human body is covered by muscles. Muscles make up about 40% of the total body weight. In most animals, they are related to movement or movement. It generates movement in the limbs. The upper part of the body is completely covered with muscles. Due to this the body looks beautiful and shapely. The muscular system is an organ system made up of skeletal, visceral and cardiac muscles. Muscles are made up of long cells called muscle fibers. Moss muscles have the property of contractility and excitability. It provides strength, balance, posture movement and heat to the body. There are more than 600 muscles in the human body. Let’s know about the Muscular System in Hindi.
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Most of the human body is covered with muscles. Muscles make up about 40% of the total body weight. In most animals, they are related to movement or movement. It generates movement in the limbs.
The upper part of the body is completely covered with muscles, due to which the body looks beautiful and shapely, the muscular system is an organ system made up of skeletal, visceral and cardiac muscles.
Muscles are made up of long cells called muscle fibers. Muscles have the property of contractility and excitability. It provides strength, balance, posture movement and heat to the body, there are more than 600 muscles in the human body. Only the voluntary muscles are counted in the muscular system, which are attached to the bones and whose contraction causes the movement of the organs. and the body can tremble and move.
In the muscular system, only the voluntary muscles are counted, which are attached to the bones and whose contraction causes movement of the limbs and the body can move and move. The muscle originates from one bone, which is called its fundamental bond, and is attached to the other bone by a tendon, which is its point of view.
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different types of muscles
Muscles are the flesh under the skin, it generates movement in the organs and makes the body strong, muscles are the active part of the motivational apparatus, their contraction results in various activities, after prolonged strenuous work in the muscles Fatigue is experienced due to the accumulation of lactic acid, on the basis of function the muscles are divided into two classes, these are-
These stretched muscles are made up of tissue and are compressed according to the will of the human being, it is found in the head, trunk and forearms, it is also found in some internal parts of the body like tongue, groin etc.
These smooth (smooth) muscles are made of tissue, the contraction of these muscles is not controlled by the will of man, they are found in the internal organs, blood vessels and skin walls. Includes three main types of muscle
Special tissue that attaches to bones and allows movement. Together, the skeletal muscles and bones of the skeletal muscles are called the musculoskeletal system (also known as the locomotor system).
Generally speaking, skeletal muscle in the muscular system is divided into opposing pairs such as the biceps and triceps at the front and back of the upper arm. Skeletal muscles are under our conscious control, which is why they are also called voluntary muscles. Another term is striped muscles, because the tissue looks striated when viewed under a microscope.
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Located in various internal structures including the digestive tract, uterus, and blood vessels such as arteries. Smooth muscle is arranged in flaky sheets that contract in waves along the length of the structure. Another general term is involuntary muscle, because the movement of smooth muscle occurs without our conscious awareness.
A muscle specific to the heart. The heart shrinks and loosens without our conscious awareness.
vital muscles of the body
The masseter runs from the temporal bone (which forms part of the sides and base of the skull) to the lower jaw (mandible). It raises the lower jaw to close the mouth. The masseter is the strongest muscle in your body.
The temporalis begins on the two bones of the skull, the frontal and side and base (temporal). It runs to the top of the lower jaw (mandible). Like the masseter, the temporalis helps to close the mouth.
The deltoids are the triangular muscles of the shoulder. This strongest point in the Muscular System is the central segment, which raises the arm to the side. The front and back parts of the muscle bend the hand. Deltoid comes from the Greek word deltoeides, meaning a (river) shaped like a delta, which is triangular.
(PEC) Pectoralis major is a large, fan-shaped muscle. It covers the upper part of the front, starting at the breastbone (or sternum), including the second to sixth rib.
From there, the pectoralis major attaches to the collar bone (or clavicle) and converges into the upper arm bone (or humerus) just below the shoulder. This muscle moves the arm throughout the body
The adductor longus is located on the inner thigh. Joint means movement, so this muscle allows the femur to move inward and to the side.
Located in the lower leg, the sole runs from the bones of the lower leg (tibia and fibula) to the heel (calcaneus). The soleus muscle flexes the foot by rotating the foot at the ankle, it also helps with circulation by pumping blood back toward the head.
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Main functions of the muscular system
Muscle is the contractile tissue of animals. They contain contractile filaments that can enlarge or shrink the size of the cell. The tissue produced by muscle cells is called muscular tissue which produces movement in all organs. There are mainly many functions of the Muscular System which are given below.
- The main function of the muscular system is to allow movement, when muscles contract, they contribute to gross and fine movement.
- Gross motion refers to large coordinated movements and includes: walking, running, swimming
- Fine movements include small movements, such as: writing, speaking, facial expressions
- Small skeletal muscles are usually responsible for this type of action.
- The movement of most of the muscles in the body is under conscious control. However, some movements are reflective, such as moving the hand away from a source of heat.
- Muscle tendons exert strain on joints and contribute to joint stability; Muscle tendons in the knee joint and shoulder joint are important in stabilization.
- The main muscles are in the abdomen, back, and pelvis, and they also stabilize the body and assist with tasks such as lifting weights.
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- Skeletal muscles help to keep the body in the correct position when one is sitting or standing. This is known as posture.
- While good posture depends on strong, flexible muscles, rigid, weak or tight muscles contribute to poor body posture and misalignment.
- Long-term, poor posture can lead to joint and muscle pain in the shoulders, back, neck, and elsewhere.
- Heart is a muscle that pumps blood throughout the body. The heart rate is out of conscious control, and it automatically contracts when excited by electrical signals.
- Smooth muscle in the arteries and veins plays another role in the circulation of blood around the body. These muscles maintain blood pressure and circulation in the event of anemia or dehydration.
- During periods of intense exercise when the body needs more oxygen, they expand to increase blood flow.
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- Breathing involves the use of the diaphragm muscle.
- The diaphragm is a dome-shaped muscle located at the bottom of the lungs. When the diaphragm contracts, it pushes down, causing the chest cavity to enlarge, then filling the lungs with air. When the diaphragm muscle relaxes, it pushes air out of the lungs.
- When one wants to take more deep breaths, one needs the help of other muscles including the abdomen, back and neck.
- The muscular system allows movement within the body, for example, during digestion or urination.
- Smooth muscles in the gastrointestinal or GI tract control digestion. The GI tract extends from the mouth to the anus.
- Food moves through the digestive system with a wave-like motion called peristalsis. The muscles in the walls of hollow organs contract and relax, causing this movement, which pushes food through the esophagus into the stomach.
- The upper stomach muscles relax to allow food to enter, while the lower muscles mix the food particles with stomach acid and enzymes.
- Digested food moves from the stomach to the intestines by peristalsis, from here, more muscles contract to push the food out of the body as feces.
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- The urinary system includes smooth and skeletal muscles, including: bladder, kidneys, penis or vagina, prostate, ureters, urethra
- Urinary problems, such as poor bladder control or retention of urine, are caused by damage to the nerves that carry signals to the muscles.
Smooth muscles in the uterus expand and contract during childbirth. These movements push the baby through the vagina. Also, the pelvic floor muscles help to bring the baby’s head down from the birth canal.
- The six skeletal muscles around the eye control its activities. These muscles work quickly and properly, and allow the eye to:
- Maintain a still image, scan the surrounding area, track moving objects
- If someone has damage to their eye muscles, it can impair their vision.
- The muscles of the torso protect the internal organs at the front, sides and back of the body. The bones of the spine and ribs provide further protection.
- Muscles also protect bones and organs by absorbing shock and reducing friction in joints.
- Maintaining normal body temperature is an important function of the muscular system. About 85 percent of the heat a person produces in their body comes from shrinking muscles.
- When body heat falls below the optimum level, skeletal muscles increase their activity to produce heat. The shiver is an example of this mechanism. The muscles in the blood vessels also contract to maintain body heat.
- The body temperature can be brought back within the normal range by relaxing the smooth muscles in the blood vessels. This action increases blood flow and releases excess heat through the skin.
There are three types of muscles. Voluntary muscles, involuntary muscles and cardiac muscles.
The main function of the muscular system is to allow movement, when muscles contract, they contribute to gross and fine movement. Small skeletal muscles are usually responsible for this type of action. The movement of most of the muscles in the body is under conscious control.
The human body is made up of about 650 muscles. These muscles are about half of the human body weight.
The gluteus maximus is the largest muscle in the human body.
The strongest muscle in the human body is the jaw muscle.
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