muscularskeletal Mr. Schmidt
Summit Career College

The human body contains more than 650 individual muscles, which provide pulling power so that you can move around. These muscles constitute about 40% of your total body weight. The muscles' points of attachment to bones or other muscles are designated as origin or insertion.The point of origin is the point of attachment to the bone to which the muscle is anchored. The point of insertion is the point of attachment to the bone the muscle moves. Generally, the muscles are attached by tough fibrous structures called tendons. These attachments bridge one or more joints and the result of muscle contraction is movement of these joints. The body is moved primarily by muscle groups , not by individual muscles. These muscle groupings power all actions as diverse and wide ranging as the caressing of a baby to the lifting of heavy objects.

The skeleton is the framework of the human anatomy, supporting the body and providing protection from external injury to many organs and/or body systems. 206 bones compose the skeleton, about half of which are in the hands and feet. Most bones connect with other bones at the site of a joint (elbow, ankle, wrist, etc), and plays a large role in the flexibility of that joint as well.These connections are referred to as articulations'. Only one bone, the HYOID does not articulate with another bone as described above. Rather, the hyoid anchors the tongue and is attached to the styloid processes of the skull by a ligament. The male skeleton and the female skeleton are remarkably similar to each other. The most noteworthy differences are that the female skeleton is generally lighter in weight and smaller then that of the male. The female pelvis is more ahallow and wide helping to avoid antepartum mishaps.
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Last updated  2008/09/28 05:18:04 PDTHits  368