Characteristics of Muscle

They be made up almost entirely of clean-living fibrous tissue, composed of collagen, which is an anhydride of gelatin. Tendons tolerate a sparse profligate supply, and nerves supplying the tendons deem specialized terminal fibers called organs of Golgi. The tendon is subdivided into fascicles by endotendineum, which is a connective tissue exaccent of the epitendineum (Ross, Romrell and Kaye, 1995, 95-95). It holds the blood vessels and nerves of the tendon.

Ap unrivalleduroses are flattened, ribbon-like tendons, similar in structure to tendons, with very few blood vessels (Ross, Romrell and Kaye, 1995, 96). They take issue from tendons only in being flatter and thinner. The fibers in aponeuroses are arranged in multiple layers, with the bundles of collagen in one layer being at 90 degrees to the bundles of collagen in the conterminous layer. The fibers within each layer are arranged in regular arrays, forming dense regular connective tissue.

3. What is the importance of acetylcholinesterase in go through cell contraction?

Acetylcholinesterase is an enzyme which breaks down the neurotransmitter, acetylcholine, and is important in muscle cell contraction, because if the acetylcholine was not broken down, the muscle would come about being stimulated and would stay contracted, resulting in tetany, i.e. the muscle would cramp, and would not relax (Ross, Romrell and Kaye, 1995, 223).

A motor unit is the neuron and the unique(p ablaze(p)icate) mus

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A second-class jimmy has the load between the fulcrum and the effort, and a hunky-dory effort dissolve be used to lift a large load (Bones, 2004). An example of a second-class lever in the human body is the Achilles tendon pushing or pulling across the toel of the foot as the fulcrum. Second-class levers interpret the advantage of strength.

7. Differentiate between the arrangement of elements (load, fulcrum, and effort) in first-, second-, and third-class levers.

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There are terzetto types of skeletal muscle fibers which differ in their diameter and in their color (Ross, Romrell and Kaye, 1995, 215-216).

These fiber types can be distinguished by observing fresh muscle tissue, and by staining fixed samples of tissue histochemically for oxidative enzyme activity. The three types of fibers are personnel casualty fibers, white fibers, and intermediate fibers. The red fibers are small fibers, and they wee-wee large amounts of myoglobulins and cytochromes and many mitochondria in their cytoplasm. The white fibers are large muscle fibers, and pick up less myoglobin and cytochromes, and have fewer mitochondria in the cytoplasm. The intermediate fibers are of intermediate size, and have pigment contents and mitochondrial numbers somewhere between those of the red fibers and the white fibers. Myoglobin is the oxygen-carrying pigment, something like hemoglobin, found in muscle cells.

duster muscle fibers make up fast-twitch motor units, and fatigue rapidly, precisely generate a large peak muscle tension (Ross, Romrell and Kaye, 1995, 224). They are adapted for rapid contraction and precise fine movements, and constitute the principal fibers of the extraocular muscles of the eye, and the muscles that control the movement of the digits. White fibers in these muscles have greater and more precise innervation than red fibers have.

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