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Question
Epithelial tissue in animals is non-vascular but permeable. Give a reason.
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Solution
- In epithelial tissue the cells are closely packed without intercellular spaces.
- Cells rest on basement membrane which is made up of a network of white, non-elastic collagen fibres.
- This tissue has no blood supply. Some epithelial cells are involved in physiological processes such as respiratory gases exchange, absorption, secretion, etc., hence permeable.
- In epithelial tissue the cells are closely packed without intercellular spaces.
- Cells rest on basement membrane which is made up of a network of white, non-elastic collagen fibres.
- This tissue has no blood supply. Some epithelial cells are involved in physiological processes such as respiratory gases exchange, absorption, secretion, etc., hence permeable.
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