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Diana Mossop

About The Human Musculoskeletal System

The information on this page is about the human musculoskeletal system and where applicable other body parts that are associated or related to the musculoskeletal system.

Muscle Cells

A muscle is composed of bundles of specialized cells capable of contraction and relaxation to create movement. There are three types of muscle in the body: skeletal, smooth, and cardiac. There are only three basic types of muscle: the striped, or striated, skeletal muscles that move the bones; the smooth, involuntary muscles that line the blood vessels, stomach, digestive tract, and other internal organs; and the cardiac muscles, which are a cross between the smooth and the striped muscles. If one were to slice through a muscle diagonally, he would find that it resembles a telephone cable. Inside is a bundle of smaller cables, and each bundle surrounds still smaller ones. The first and largest bundle is made up of muscle fibers in which there are nerves, blood vessels, and connective tissue. Each fiber is built up from smaller strands called myofibrils, and each myofibril contains interlaced filaments of muscle proteins. Visceral tissue is tissue associated with the internal organs of the body, especially those in the abdominal cavity.

Skeletal Muscle

Skeletal muscles are composed of groups of muscle fibers in an orderly arrangement. A small muscle may be only a few bundles of fibers, while the major muscles in the body, such as the gluteus maximus that forms the bulk of the buttock, are made up of hundreds of bundles. Movement of the skeletal muscle is under the control of the brain. Each muscle fiber has a nerve ending that receives impulses from the brain and then stimulates the muscle, resulting in the filaments of myosin sliding over the actin filaments in about the same way as an extendable ladder moves when it is closed. This movement causes the muscle to shorten in length.

Articles / Blogs / News Related To The Human Musculoskeletal System

The information on this website is provided for information purposes only and is not intended or recommended as a substitute for professional medical advice. Always seek the advice of your doctor/physician or other qualified health care provider regarding any medical condition or treatment. Some or all of the information on this page may be supplied by a third-party and not controlled by the DianaMossop.com website or authors and is therefore is not the responsibility of the DianaMossop.com website or its authors.


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