what are the uses of muscle tissues in humans
Answers
About half of a body’s weight is muscle. Muscle tissue is of three distinct types: skeletal, cardiac, and smooth. Each type has a unique structure and a specific role. Skeletal muscle moves bones. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that changes shape to facilitate bodily functions of intestine and bladder. Here are more details about the structure and function of each type of muscle tissue in the human muscular system.
600 Skeletal Muscles move bones and other structures: Skeletal muscles attach to and move bones by contracting and relaxing in response to voluntary messages from the nervous system. Skeletal muscle tissue is composed of striated long cells organized into bundles and supplied by blood vessels and innervated by motor neurons.
Smooth Muscle is found in the walls of hollow organs throughout the body. Walls of many bodily organs contract and relax automatically. Such involuntary movements are triggered by impulses that travel through the autonomic nervous system to the smooth muscle tissue. The arrangement of cells within smooth muscle tissue allows for contraction and relaxation with great elasticity in the walls of the urinary bladder and the uterus. It allows these organs to expand and relax as needed.
The smooth muscle of the digestive tract facilitates the peristaltic waves that move forward swallowed food and nutrients. The smooth muscle in the eye changes the shape of the lens to bring objects into focus. Artery wall smooth muscle relax and contract to move blood through the body
Cardiac Muscle contracts in response to signals from the Cardiac Conduction System. The heart wall is composed of three layers. The middle layer, the myocardium, is responsible for the heart’s pumping action. Cardiac muscle, contracts in response to signals from the cardiac conduction system to make the heart beat.
Cardiac muscle is made from cells called cardiocytes. Like skeletal muscle cells cardiocytes have a striated appearance, but their overall structure is shorter and thicker. Cardiocytes are branched, allowing them to connect with several other cardiocytes, forming a network that facilitates coordinated contraction.http://www.udel.edu/biology/Wags....
Important Functions: Muscles are the "engine" that the body uses to propel itself. Although they work differently they turn energy into motion. Everything that is conceived by the brain is expressed as muscular motion. Because muscles are so crucial to us, they are amazingly sophisticated. They are efficient at turning fuel into motion, they are long-lasting, they are self-healing and they are able to grow stronger with practice.
There are three unique kinds of muscle and functions in any mammal's body:
Skeletal muscle is the type of muscle that we can see and feel. To a body-builder he or she work out to increase muscle mass: it is the skeletal muscle is what is being exercised. Skeletal muscles attachments come in pairs : one muscle to move the bone in one direction and another to move it back the other way. These muscles contract voluntarily, when thinking contraction and the nervous system tells them to do so.
Smooth muscle is found in your digestive system, blood vessels, bladder, airways and, in a female, the uterus. Smooth muscle has the ability to stretch and maintain tension for long periods of time. It contracts involuntarily, because the nervous system controls it automatically.
Cardiac muscle is found only in the heart. Its big features are endurance and consistency. It can stretch in a limited way, like smooth muscle, and contract with the force of a skeletal muscle. It is a twitch muscle only and contracts involuntarily.
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