Musculature
The muscular system is a group of similar muscles in all vertebrates, consisting of a group of muscles consisting of muscle fibers, the muscle cell, or so-called structural units of muscles, and most muscles attach to bones, cartilage, or connective tissue to reduce or guide their movement.
Types of muscles
The muscular system consists of three types of muscle, namely:
- Cardiac muscle: The muscles that are planned in the heart, which are involuntary muscles.
- Smooth muscles: muscles that are in the form of a spindle, and are present in the visceral organs except for the heart, which is involuntary muscles.
- Structural muscles: the skeletal muscles on the skeleton, which are voluntary muscles.
The main functions of the musculoskeletal system
The muscular system has many important functions in the body:
- Movement: The movement is the simplest and most important function of the muscular system, as the muscles are linked to skeletal bones and movement, and control the central nervous system on the part of these movements.
- Circulatory movement: the movement of the heart and smooth muscles that help the flow of blood across the body, controlled by the autonomic nervous system.
- Breathing: diaphragm muscle plays an important role in the breathing process. If more oxygen is needed as in the case of exercise, the muscles of the abdomen, neck, and back work to increase breathing.
- Digestion: Digestion is performed by the smooth muscles within the digestive system, including the mouth, esophagus, stomach, intestines, intestines, intestines, and anus. These muscles pass food through the constriction and expansion movements.
- Urination: The urinary system consists of the kidneys, bladder, ureter canal, urethra, penis or vagina, and prostate, all of which contain smooth muscles to allow the retention of urine, or release when urinating.
- Birth: The woman's womb contains smooth muscles that are extended to fit the fetus's growth during pregnancy. In labor, the uterus is pulled and stretched to help the baby get out of the womb.
- Vision: The eye gap contains six muscles that help to move the eye, as well as the smooth muscles within the eye, which work together to complete the function of the eye.
- Balance: help the basic muscles, such as abdominal muscles, back, pelvis on the stability of the body, protect the spine.
- Preserving body posture: The skeletal muscles work to give the body a posture from head to toe.