to certain life body needs water, electrolyte,minerals,for this purpose…whole system helps.it consist of alimentary tract and accessory organs……alimentary tract starts from mouth,pharynx,oesophagus,stomach,small intestine,large intestine,rectum and anus.
December 11, 2015
No Comments »
No comments yet.
RSS feed for comments on this post.
Leave a comment
You must be logged in to post a comment.