MICROANATOMY

Detailed explanation-1: -The small intestine absorbs most of the nutrients in your food, and your circulatory system passes them on to other parts of your body to store or use. Special cells help absorbed nutrients cross the intestinal lining into your bloodstream.

Detailed explanation-2: -Columnar epithelium is mainly involved in absorption and secretion.

Detailed explanation-3: -The main function of simple columnar epithelial cells are protection. For example, the epithelium in the stomach and digestive tract provides an impermeable barrier against any bacteria that could be ingested but is permeable to any necessary ions. This function is especially important in the colon.

Detailed explanation-4: -it absorbs nutrients from the lumen of the intestine. Simple columnar. epithelia are also located in the stomach where it secretes acid, digestive enzymes and mucous. Stratified Squamous Epithelium Stratified squamous epithelia consist of multiple.