Question

define striated un striated and cardic
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Answer 1

Answer:

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Answer 2

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$\red{STRIATED}$

Striated muscles are also called voluntary muscles because they are under the direct control of one's will. Muscle fibres are cells which make up striated muscles are multinucleate and unbranched.Each cell is enclosed in a thin definite membrane called sarcolemma .Te cytoplasm of the muscle fibre called sarcoplasm contains element called myofibrils .It is this contractile filaments which cause the movements of the muscles and also give rise to the sstriations. Striated muscles constitute about 50% of the body weight and are attached primary lead to the bones .They are found in the arms ,legs ,necks etc.these muscles get tired and need rest .

$\red{UNSTRIATED}$

These are also called involuntary muscles because they are not under the direct control of one's will. The muscle fibres are uninucleate and spindle shaped .The ends of the cells maybe branched .Each side is not enclosed in a membrane but many fibres are joined together in a bundles by loose connective tissue .Myofibrils run longitudinally through the fibres of these muscles which are also called smooth. Smooth muscles are also found in blood vessels ,the iris of the eye ,bronchi and the skin.

$\red{CARDIAC}$

These muscles are also involuntary muscles but they are only found in the heart. The muscle fibres are uninucleate and branched. These branches are united by intercalated disks. They also have characteristics of the striated and non striated muscles. Each fibre is surrounded by sarcolemma and the myofibrils present in the sarcoplasm give the muscles associated appearance. The nucleus is centrally located .They never get tired and continually help pump blood through out the life of an individual.

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