Describe the properties and functions of the smooth, skeletal and Assignment

Describe the properties and functions of the dispassionate, skeletal and cardiac muscle. (b)Explain the skid string hypothesis of - Assignment ExampleThe arrangement of these cubicles to form a muscle tissue is in like manner unique as they do non form a syncytium further they contract individually or as group of cells. This property of smooth muscle allows it to contract slowly in a rove like motion making it a suitable for gastrointestinal tract. Circular and longitudinal muscles are cardinal smooth muscles found throughout the GIT tract and are responsible for peristalsis. Smooth muscles also arguing the walls of the gillyflower watercrafts. They play an important role, especially in the arterioles, by constricting or dilating the blood vessel thereby controlling the flow of blood. Smooth muscles are also crucial in bigger blood vessels, such as aorta, and enable them to withstand high pressure generated during systole or ventricular contr motion. (Clark, 2005, p. 139) S keletal muscle These are the muscles to a lower place voluntary control. Skeletal muscle is also sometimes referred to as striated muscle but this term should be avoided as cardiac muscle is also a striated muscle and leads to ambiguity. A cell of skeletal muscle is very long, up to 30cm in length, and has a cylindrical shape. The cross section coat of these cells is about 10-100 micrometer. It is non surprising that cell of this length has multiple nuclei for support and survival. But these nuclei are not located at the center and rather aligned at the periphery. This is because the contractile components in the cell cytoplasm push these nuclei towards the call border. Skeleton muscles form bulk of a human body and come divers(a) functions. They are essential for locomotion and to perform any movement of the body. Although, skeletal muscles are mostly under voluntary control they also take part in a reflex arc that does not involve the higher centers and, therefore, is an inv oluntary process. The contractions produced by skeletal muscles are forceful and quick as compared to the smooth muscle. (Clark, 2005, p. 139) Cardiac Muscle Cardiac muscle is a specialized tissue perfectly adapted to perform its function. It is the only muscle that is found in the heart. A very special property of a cardiac muscle is that is can contract on its own which mean it does not require an external stimulation. reliable specialized cardiac cells found in the sinus node, atrioventricular node and conducting fibers are capable of initiating an action potential and set up a particular wheel for contraction of surrounding muscle cells. referable to these properties they are referred to as pace makers of the heart. Cardiac cells are arranged in a syncytium that helps them in conducting the galvanising signals more efficiently. Moreover, these cells are joined to each other by special intercalated disks. These intercalated disks are actually fused cell membranes with gap ju nctions. Gap junctions allow fast sharing of cytoplasmic contents and help in the progression of electrical signals across this syncytium. The function of cardiac muscle is to set up its own rhythm and provide force required to pump blood throughout bodys circulation. Sliding filament hypothesis of muscle contraction The cytoskeleton and its arrangement are unique in myofibers as compared to other places in our body. The entire length of myofiber is studded in the center with large structures called myofibrils. These myofibrils are composed of two types of myofilaments thick-skulled myofilaments and thin myofilaments. Thick myofilaments are made up of a protein called myosin. This protein has a special shape that is life-sustaining for its