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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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संबंधित प्रश्न
Give three features of cardiac muscles.
Distinguish between Cardiac muscle and striated muscle
Write true or false of the statement. Rewrite the false statement correctly.
Voluntary muscles are present in the internal organs of the body.
Write true or false of the statement. Rewrite the false statement correctly.
Cardiac muscles have dark and light bands.
Classify and explain different types of muscles with the help of suitable diagrams.
Differentiate between cells of:
Fibres of voluntary muscle and cardiac muscle.
Smooth muscles occur in ______.
Match the column (A) with the column (B)
| (A) | (B) | ||
| (a) | Fluid connective tissue | (i) | Subcutaneous layer |
| (b) | Filling of space inside the organs | (ii) | Cartilage |
| (c) | Striated muscle | (iii) | Skeletal muscle |
| (d) | Adipose tissue | (iv) | Areolar tissue |
| (e) | Surface of joints | (v) | Blood |
| (f) | Stratified squamous epithelium | (vi) | Skin |
Differentiate between voluntary and involuntary muscles. Give one example of each type.
Cylindrical, unbranched multinucleated cells are ______.
