outline the function of large intestine
Answers
★ FUNCTIONS OF LARGE INTESTINE:-
→ Absorption of some water, minerals and certain drugs.
→ Secretion of mucus which helps in adhering the undigested particles together and lubricating it for an easy passage.
→ The undigested, unabsorbed substances called faeces enters into the caecum of the large intestine through ileo-caecal valve, which prevents the back flow of the faecal matter.
→ It is temporarily stored in the rectum till defaecation.
→ The activities of the gastro-intestinal tract are under neural and hormonal control for proper coordination of different parts.
→ The sight, smell and or the presence food in the oral cavity can stimulate the secretion of saliva.
→ Gastric and intestinal secretions are also, similarly, stimulated by neural signals.
→ The muscular activities of different parts of the alimentary canal can also be moderated by neural mechanisms, both local and through CNS.
→ Hormonal control of the secretion of digestive juices is carried out by the local hormones produces by the gastric and intestinal mucosa.