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Tissues — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceTissues4 Marks
Question
Classify connective tissue and give one example of each type.
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Answer

The connective tissue is specialized to connect and anchor various body organs.
There are five types of connective tissues:
  1. Areolar: This tissue is a loose and cellular connective tissue. Its matrix consists of white collagen fibre and yellow elastic fibre. It joins skin to muscles, fills spaces inside organs and is found around muscles, blood vessels and nerves.
  2. Dense Regular Connective tissue: It is fibrous connective tissue having densely packed fibres and cells. It is the principal component of tendons, ligaments and aponeuroses.
  3. Adipose tissue: It is an aggregation of fat cells or adipocytes. The fat cells are arranged into lobules separated by partitions of collagen and elastin fibres. These are found abundant below the skin, between the internal organs and in yellow bone marrow.
  4. Skeletal tissue: It is a supporting tissue which includes cartilage and bone. Both these tissues form the endoskeleton of a vertebrate body. Cartilage is located in ear pinna, nose tip, epiglottis etc. Bone forms the endoskeleton in human beings and provides shape to the body.
  5. Fluid tissue: It links the different parts of the body and maintains continuity in the body. It includes blood and lymph.

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