i).Mouth
-Food is chewed to break and increase surface area for enzyme action; food is mixed with saliva which contains salivary amylase to lubricate the food; salivary amylase converts starch to maltose
ii)Stomach
-Food is mixed with gastric juice;
-Gastric juice contains HCL, pepsin, and rennin
-HCL provides optimum PH for enzymes; Pepsin breaks down proteins to peptones ; Rennin coagulates milk to increase the surface for enzyme action
iii) Small intestine
-In the duodenum food is mixed with bile and pancreatic juice; Bile emulsifies fats to increase the surface area for enzyme action/as salt to neutralize acid from stomach;Pancreatic amylase coverts starch to maltose; Pancreatic lipase converts fats to glycerol and fat acid; Trypsin convert s proteins to peptones and peptides; In the rest of the small intestines food is mixed with intestinal juices(peptidase, maltase, sucrase/ invertase and lactase enzymes); Peptidase converts peptones and peptides to amino-acids; maltase converts maltose to glucose; Sucrase (invertase) converts sucrose to glucose and galactose. Digested food materials are absorbed in the ileum; Undigested and indigested food materials move to the large intestines for excretion
iv) Caecum
The none ruminants have a large caecum which is equipped with micro-organisms for digesting cellulose .
maurice.mutuku answered the question on November 12, 2019 at 10:28
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