MRCP UK EXAMINATIONS

Detailed explanation-1: -The food contains three macronutrients that require digestion before they can be absorbed: fats, carbohydrates, and proteins. Through the process of digestion, these macronutrients are broken down into molecules that can traverse the intestinal epithelium and enter the bloodstream for use in the body.

Detailed explanation-2: -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.

Detailed explanation-3: -There are four steps in the digestion process: ingestion, the mechanical and chemical breakdown of food, nutrient absorption, and elimination of indigestible food. The mechanical breakdown of food occurs via muscular contractions called peristalsis and segmentation.

Detailed explanation-4: -Salivary amylase affects oral perception of starches, preabsorptive metabolic signaling, and plasma glucose responses to ingested starch.