GENERAL HISTOLOGY

Detailed explanation-1: -Goblet cells secrete mucus, which lubricates the passage of food through the intestines and protects the intestinal wall from digestive enzymes [6]. Paneth cells are only found in small intestine, particularly in the ileum [7].

Detailed explanation-2: -Unlike the small intestine, the large intestine produces no digestive enzymes. Chemical digestion is completed in the small intestine before the chyme reaches the large intestine. Functions of the large intestine include the absorption of water and electrolytes and the elimination of feces.

Detailed explanation-3: -There are no villi or plicae circularis in the large intestine. The simple columnar epithelium has abundant goblet cells interspersed with absorptive cells . The crypts of Lieberkuhn are larger than in the small intestine.

Detailed explanation-4: -The lining of the small intestinal mucosa is very highly specialized for maximizing digestion and absorption of nutrients. The lining is highly folded to form microscopic finger-like projections called villi which increase the surface area to help with absorption.