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प्रश्न
Give structure, types and functions in brief of the following:
Muscular tissue
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उत्तर
Muscular tissue:
Structure - Muscle tissue consists of cells which are elongated and large-sized, hence they are also called muscle fibres. These fibres are of various sizes. Contractile proteins are present in the muscle cells which bring about their contraction and relaxation. The cytoplasm of muscle fibre is called sarcoplasm and is bounded by a membrane called sarcolemma.
Types: Muscle tissue is of three types:
(i) Striated muscle tissue
(ii) Unstriated muscle tissue
(iii) Cardiac muscle tissue
Functions -
(i) Muscles bring about all voluntary movements done by a person.
(ii) All the involuntary movements needed to keep the body alive are possible due to muscles.
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