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Supportive soft tissues, if you think about the abdominal muscles even if you do not have a 6 pack, 0084 If I adjust my position then I am changing which muscles are relaxed and contracted. Maintaining body position, just sitting I have bunch of muscles that are contracted and relaxed. We will talk more about that in the future. There are voluntary muscles also known as skeletal muscles and this would fall under smooth or cardiac muscles. Those are muscles that we do not think about because we do not have to think about it consciously to make it work. 0036įor instance, muscles control whether or not my hair is standing straight up or my pores are closed or they are relaxed like they are now. Within the body muscles are very important, the ones that you cannot consciously control. That helps distribute the right amount of blood to the particular places in the body that need a slight adjustment. Within your arteries there are very important muscles for regulating how thin or thick those blood vessels are and 0021 It is not just movement of the body as a whole but all the movement within the body is regulated by the muscles something a simple as blood flow. There are many functions of muscles the most obvious one is movement. This is the lesson on the muscular system.
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Arm muscles include the biceps brachii, triceps brachii, and brachioradialis.Muscles of the torso include the deltoid, trapezius, latissimus dorsi, and rectus abdominus.Muscles of the head and face include the epicranius, zygomaticus, buccinator, and masseter.Muscle names in the body are coined by some combination of their function, location, size, and/or orientation.Fast (white) and slow (red) twitch muscle fibers are found in the human body.Creatine phosphate helps quickly regenerate ATP in a muscle fiber.Lactic acid forms in muscle tissue when not enough oxygen is available for the energy demands of that tissue.Acetylcholinesterase and ATP are needed to relax a muscle.Acetylcholine, ATP and Calcium are involved in contracting a muscle.
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The Sliding Filament Theory describes how myosin (thick) filaments move actin (thin) filaments closer together to contract a myofibril.Sarcomeres are made of groups of myosin, actin, troponin, and tropomyosin.Skeletal muscle anatomy involves these terms: fascia, epimysium, fascicles, perimysium, muscle fibers, endomysium, myofibrils, and sarcomeres.The 3 types of muscle cells (tissues) includes skeletal (striated), smooth, and cardiac muscle.The function of muscles includes movement, maintaining body position, support of soft tissues, regulating entrances and exits of the body, and maintaining body temperature.