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9/17/2018

Week of September 17 to September 21: Digestive system

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function of the digestive system


  • cells require nutrients for energy, growth, and repair
  • we extract nutrient through our digestive system
Digestion: the process by which the digestive system breaks down food into molecules that the body can use.
  • foods are physically broken apart into smaller pieces
  • enzymes are chemicals that are involved in digestion
Absorption: is the process by which nutrients pass through the lining of the digestive system into your blood

structures of the digestive system


Mouth: mechanical digestion happens here as your teeth crush the food, enzymes in our saliva break down starches in food

Pharynx: the tongue pushes chewed food into the upper portion of the throat, this is called the pharynx, what we have between the digestive tract and the respiratory system.

Epiglottis: seals off trachea or windpipe preventing food and liquid from entering your lungs

Esophagus: a muscular tube that connects the pharynx to the stomach

Peristalsis: muscle contractions that move the food along

parts of digestive system


  • Mouth
  • Pharynx
  • Epiglottis
  • Salivary Gland
  • Esophagus
  • Stomach
  • Liver
  • Pancreas
  • Small Intestine
  • Large Intestine
  • Gallbladder
  • Rectum

teamwork


Stomach: from the esophagus, food passes through  valve and into the stomach, a muscular pouch in the abdomen

Chyme: the thick liquid that is moved around by peristalsis

Small Intestine: where most chemical digestion and absorption take place

Liver: the role is to produces bile, a substance that physically breaks up large fat droplets

Gallbladder: Bile flows from the liver to the gallbladder, the organ that stores bile, the gallbladder releases bile through a tube into the small intestine 

Pancreas: between stomach and small intestine, secreted enzymes into the small intestine that complete the breakdown of carbohydrates, proteins, and fats.

Villi: tiny fingerlike projections that line the small intestine and absorb nutrients

Large Intestine: absorbs remaining water into the blood, absorbs vitamin K that is produced by bacteria, prepares waste products  

make a meal plan


Picture

https://www.choosemyplate.gov/

meal plan calculator 

nutrition.gov

usda meal planner

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