Answers

  • Brainly User
2014-09-08T22:20:43+05:30
Mucosa-protection,secretion and absorption
Sub-mucosa-nourishes surrounding tissues,transports absorbed materials
Muscular layer-movements of the tube and it's contents
Serosa-protection and lubrication
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plz mark as best if it was useful
sure but after seeing remaining answers i will do it for sure