BIO 240 HISTOLOGY REVIEW Muscle Tissue

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Skeletal muscle

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BIO 240 HISTOLOGY REVIEW Muscle Tissue Dr. Tim Ballard Department of Biology and Marine Biology

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Skeletal muscle Skeletal muscle – longitudinal area – H&E – 10x target singular muscle strands core Skeletal muscle filaments (singular cells) are long and round and hollow, with various cores that are set on the border of the strands.

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Skeletal muscle Skeletal muscle – longitudinal segment – H&E – 20x target connective tissue and veins between muscle strands numerous cores on the outskirts of the cell By moving the fine-center change tenderly all over, you can see the rotating light and dim groups that frame the striations.

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Skeletal muscle Skeletal muscle – longitudinal area – H&E – 40x target various cores on the outskirts of the cell connective tissue and veins between muscle filaments singular muscle fiber The striations, fringe cores, and parallel strands are the offering focuses this is skeletal muscle seen in longitudinal segment.

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Skeletal muscle Human throat (upper) – segment – H&E – 10x goal longitudinal skeletal muscle strands See the striations? various cores on the fringe of the phone See the incidentally put cores? skeletal muscle strands in cross segment The upper throat of the human has skeletal muscle in both cross and longitudinal segment.

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Skeletal muscle Skeletal muscle – cross segment – H&E – 40x goal skeletal muscle filaments in cross segment Why wouldn't you be able to see the striations in a cross-area of skeletal muscle?

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Skeletal muscle A band I band Z line Z H zone M line sarcomere Electron micrograph of a skeletal muscle cell in longitudinal segment at phases of expanding of constriction.

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Cardiac muscle Cardiac muscle – area – H&E – 10x goal Cardiac muscle cells run parallel to each other, yet dissimilar to skeletal muscle cells, the individual filaments branch to meet different cells, framing a meshwork or system of cells. Contrast this area and skeletal muscle. Take a gander at the absence of parallel association of the strands contrasted with that of skeletal muscle.

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Cardiac muscle Cardiac muscle – area – H&E – 20x goal In this view the expanding way of the cardiovascular muscle cells is more obvious. Likewise, take a gander at the cores. What number of are there and where are they?

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Cardiac muscle Cardiac muscle – area – H&E – 40x target striations intercalated plate halfway found core One recognizes heart muscle from skeletal muscle by the expanding strands, nearness of intercalated circles, and midway put single cores/cell.

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Cardiac muscle Cardiac muscle –section – silver – 20x target stretching intercalated plate core This stain obviously demonstrates the single focal core, fanning filaments, intercalated circles, and striations.

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Smooth muscle Smooth muscle – prodded separated – H&E – 20x target The decreased way of these cells permits them to be fitted together into sheets of cells, ideal for framing the dividers of empty organs. What's more, the absence of sarcomeres implies that the muscle sheets can extend to suit the expanded weight inside the organs. Singular cells are long, thin, and decreased on the finishes. There is a solitary core for each cell, more often than not at its longitudinal focus. There are no striations.

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Smooth muscle Large digestive tract – longitudinal segment – H&E – 10x target mucosa submucosa muscularis externa inward round external longitudinal Circular smooth muscle cells cut longitudinally would look like Longitudinal smooth muscle cells cut longitudinally would resemble

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Smooth muscle Duodenum – cross area – H&E – 40x goal internal roundabout smooth muscle Circular smooth muscle cells cut in cross segment would resemble

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Smooth muscle Large digestive system – longitudinal segment – H&E – 40x target collagen strands smooth muscle Contrast the smooth muscle cells with the collagen filaments simply above them.

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