Every person needs muscles to carry out some important life-saving functions around the body. The heart is the most important muscle in the human body. So we can not do without it. It would be impossible to eat, breathe, speak, or laugh without muscle.
Humans have more than 650 different muscles, and all these muscles perform different tasks. Total muscle mass accounts for approximately 40% of body weight, men have much more muscle tissue than women. Let us examine some important tasks muscles perform in our body in this article.
Digestion is controlled by the smooth muscle of the gastrointestinal tract, this includes the mouth, esophagus stomach, small intestine, large intestine, rectum, and anus. As foods move through the body during digestion, smooth muscles contract and relax. These muscles also help remove food from the body through bowel movement and vomiting when you’re sick.
Smooth and skeletal muscles make up the urinary system, this includes such elements as the kidney, bladder, ureter, urethra, penis, vagina, and prostate, all the muscles of the urinary tract work together to perform urination.
The dome of the bladder is made of smooth muscle, when this muscle contracts, you can urinate, and relaxing will help you hold in your urine
The eye socket is made up of six skeletal muscles that help move the eye, the muscles inside the eye are made up of smooth muscles. Injury to these muscles can cause vision loss
The diaphragm is the main muscle that works when you breathe quietly, heavy breathing that occurs during exercise may require supplementary muscles to support the diaphragm. This includes the abdominal, neck, and back muscles
Smooth muscle is present in the uterus. During pregnancy this muscle grow and stretch as the baby grows, when a woman goes into labor, the smooth muscle in her uterus contract and relax to push the baby into her vagina, which will eventually help in delivery.
Skeletal muscles are responsible for the body’s movement, skeletal muscles are attached to bones and are partially controlled by the central nervous system.
You use skeletal muscles every time you move your body. Fast-twitch skeletal muscles produce short time bursts of speed and power. Slow twitch muscles best during long movement. Skeletal muscles in the core protect and provide stability to the spine. The core muscle group includes the abdominal, back, and pelvic muscles, this group is also called a tribe. The stronger your core, the more stable your body will be. Leg muscles also help maintain balance.
The heart muscles work unconsciously, that is without our conscious intervention, they contract approximately 70 times per minute, like the voluntary muscles, this heart muscle is also composed of striated muscle fiber bundles, but they are arranged in a cross. The combination of properties of both muscle types gives the heart unique durability and strength. The heart myocardium is not affected by the will.
Movement Through Muscles-Agonist and Antagonist
Active movement of the body is caused by alternating tension and relaxation of striated (skeletal) muscles. Each muscle consists of a muscle belly, the end of which is attached to a tendon and attached to the bone of the joint system.
When a muscle contracts, the force of the muscle is transmitted through the tendon, causing the joint to move, this process requires energy which is provided by specific metabolic processes. These are only possible if the muscles are supplied with sufficient oxygen. A widely branched vascular system serves this purpose.
However, proper muscle work is only possible if the nervous system is functioning. Muscle movements occur only in connection with the nervous system and brain.