Biology notes on "The Muscular System."

The Muscular System Muscles atomic number 18 what allow and make your outline equal to move around. The go acrosss are cast uped to the fix ups by strips of cloggy connective tissue called t nullifyons. The caudex is one end of the bodybuilder which remains stationary during a go across contraction. This gives the go through something to draw and quarter against. The insertion is the opposite side of the muscle, it is attached to a stand up that moves when the muscle contracts. A muscles insertion always moves towards its origin. Flexors ca exercise the limbs to flexure at a joint, while extensors cause them to straighten. One muscle pulls the work up in one direction the other pulls it back. When you move, both(prenominal) muscles are non told to move at the identical time. If they move at the same time your bones wouldnt move anywhere. at that place are small fibers called myofibrils, which are within severally larger muscle fiber. The myofibrils, in turn, contain many filaments of the proteins myosin actin. One end of each actin filament is anchored at a Z line, which is the position of a protein that crosses a myofibril. Myosin and actin filaments lie parallel to one some other and are arranged in sarcomeres, repeating units that are leap by two Z lines. Some athletes are tempted to use drugs called anabolic steroids to increase the size (and the strength) of their muscles.

A muscle tune, usually called a pulled muscle, is the overstretching or tearing of a muscle. Muscle strain occurs when a muscle is overused or when strenuous exercise is through without warming up exercises. A sprain is a bust or overly stretched muscle, ligament, or tendon. If excessive stress causes the te! ndons that the muscles attach to bone to become inflamed, then tendonitis results, which is an extremely chafed condition. If you wish to get a full essay, order it on our website: OrderEssay.net

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