nutrition and digestion in human

Gastric juice - It is secreted by the secretory glands of the stomach wall. They are called the gastric glands. The gastric glands are formed by the infoldings of the epithelium and open into the lumen through the gastric pits. There are two types of cells that line the gastric glands - parietal ce..

This type of nutrition involves the taking in of solid particles as food (there are exceptions which are called fluid feeders) which have to be further broken down into simpler particles inside the organism. These particles may be big or small. For e.g. Animals like the earthworm and mus..

Introduction - All organisms require energy in order to stay alive. Energy is utilised to do the various bodily functions such as breathing, ingesting and digesting food, excreting, reproducing, locomotion, etc. Energy is obtained from food. Thus the process of intake of food is vital for..

Nutrition in cockroach is holozoic and it is an omnivore, feeding on different kinds of organic matter. It takes in pieces of food and has to grind them before digesting them. Thus its mouth parts are modified accordingly for chewing the foo..

Nutrition in Amoeba - Nutrition in amoeba is holozoic. Thus, solid food particles are ingested which are then acted upon by enzymes and digested. It is an omnivore, feeding on both plants and animals. Its diet includes bacteria, microscopic plants like the diatoms, min..

Nutrition in amoeba is holozoic. Thus, solid food particles are ingested which are then acted upon by enzymes and digested. It is an omnivore, feeding on both plants and animals. Its diet includes bacteria, microscopic plants like the diatoms, minute algae, microscopic animals l..

Nutrition in cockroach is holozoic and it is an omnivore, feeding on different kinds of organic matter. It takes in pieces of food and has to grind them before digesting them. Thus its mouth parts are modified accordingly for chewing the food. Cockroach The digestive s..

Animal Nutrition..

Nutrition in grasshopper (Poecilocerus pictus) is holozoic and as the name indicates is a herbivore, feeding on different kinds of vegetation like the grasses, germinating grains, leafy vegetation, etc. Grasshopper - External Features It bites off pieces of vegetation and has to grind it ..

Digestive System of Grasshopper - Digestion takes place in specialised cavities joined together to form a continuous canal. It is called the alimentary canal. Grasshopper - Digestive System The alimentary canal is divided into three main portions: Foregut Midgut Hindgu..