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Figure depicts microsopic structure of t...

Figure depicts microsopic structure of the intestinal wall of alimentary canal. Study the figure and answer the following question?
(i) The wall of alimentary canal consists of 4 main concentric coats labelled as 1,2,3 and 4. Name these coats.
(ii) The coat marked 2 has two layers marked as 5 and 6. Between these two layers is a network of nerve cells and para-sympathetic nerve fibres called..... It controls the .......
(iii) The coat marked 3 is highly vasucular connective tissue having another network of nerve cells and sympathetic nerve fibres called...... . it controls the secretion of ........
(iv) Name the parts labelled as 7 and 8

Text Solution

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(i) 1. vescral peritoneum or serosa. 2. Muscular coat. 3. Sub-mucosa 4. Mucosa or mucous membrane.
(ii) Plexus of aueback of myoentric plexus, muscular contractions.
(iii) Plexus of Meissner or submucosal plexus, intestinal juice.
(iv) 7. Lamina propria 8. villi
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