week 2 human digestion report

food for thought enters through and through our mouth where it is grinded by our teeth. aliment is grinded so that its surface ara is increased. A lubricant called mucin is fork up in the saliva of our mouth. Amylase, acidic diets and antibacterial agents ar neutralised by saliva with the help of mucin. Our tongue helps us insight nourishment and shift it close to our mouth for our teeth to grind. nutrition travels through the pharynx, trachea and esophagus in a accompanying ready During the process of food swallowing, the nose is blocked by uvula, man the trachea is blocked by the epiglottis. With wave want go across contractions, food is moved by the esophagus to the put up. Mucus secreted by esophagus acts as a lubricant on the food ball moving it along. Food then reaches the stomach which is a J-shaped expandable sack. Layers of muscle around the stomach help it stir food, and hydrochloric acid (HCL) kills bacteria and helps change proteins in the food so that pepsin can act on it efficiently. The mucus generated by the stomach prevents its own acids and enzymes from permiting it.

Food reaches the crushed intestine which is convoluted and wrinkly so as to maximise surface atomic number 18a for denseness purposes. Most of the enzymes are digested at this place. While amylase, sucrose, maltase and lactase are among almost of the secretions that help digest carbohydrates, lipase assists fats digestion. When food reaches the large intestine, nutrients are further absorbed and urine is re-absorbed. The bacteria present in the large intestine releases gases standardised H2S and CH4 which help ferment food. amino acids, biotin and Vitamin K ar e also secreted by bacteria which are primar! y sources of some of our nutrient production.If you want to turn a full essay, request it on our website: OrderEssay.net

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