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WHAT HAPPEN WITH YOUR BODY WHEN YOU EAT?, image, image, image, image,…
WHAT HAPPEN WITH YOUR BODY WHEN YOU EAT?
INGESTION
Enzyme-rich saliva starts breaking down starches.
Teeth mechanically prepare the food for swallowing.
Taste buds enhance flavor perception.
The tongue forms a bolus, initiating its journey through the digestive tract.
The process highlights the intricate connection from scent to digestion.
Digestion begins before you even taste food, it starts from the moment you smell it, starting to salivate.
DIGESTION
After swallowing, the food bolus enters the esophagus, a tube connecting the mouth to the stomach.
The epiglottis, a leaf-shaped flap, prevents food and drink from entering the windpipe and lungs.
The esophagus, about 25 centimeters long, uses muscle contractions to push food toward the stomach, taking two to three seconds.
If digestion proceeds normally, the stomach creates a nutrient-rich mixture called chyme, which is pumped into the small intestine for further digestion.
The digestive system fights germs, with gastric juices killing harmful bacteria, though it may trigger vomiting if dangerous germs are detected.
ABSORPTION
NUTRIENTS BASICS
Minerals
Include calcium, iron, and zinc; support strong bones, healthy blood, and illness prevention.
Proteins
Provide building blocks for the body, supporting growth, strength, and cellular structure.
Fats
Aid in absorbing vitamins and minerals, maintain healthy blood, and build cells and muscle.
Vitamins
Fight illness, contribute to healthy eyes, skin, and bones, and ease depression.
Carbohydrates
Fuel the brain, power muscles, and help fight disease.
Water
Essential for overall body function, with six glasses daily recommended for ages 9-13.
The primary function of the small intestine is absorption, similar to how a sponge soaks up liquid.
Nutrients from chyme are absorbed through the small intestine’s walls.
The duodenum, the first section of the small intestine, receives bile from the liver and digestive enzymes from the pancreas to continue digestion.
Nutrients, broken down into molecules, pass through the intestine’s thin lining into the bloodstream for distribution throughout the body.
ENERGY ABSORPTION
Food is broken down into molecules like glucose, a simple sugar used for energy.
Extra glucose is stored as glycogen in the liver and muscles, and if unused, as fat.
The liver filters harmful chemicals, stores vitamins and sugars, and supplies fuel to the body.
The small intestine absorbs most nutrients, while unabsorbed material is passed to the large intestine.
ELIMINATION
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The large intestine, about 1.5 meters (5 ft.) long and 7.6 cm (3 in.) wide, is the final organ in the digestive system.
It absorbs remaining water, vitamins, and minerals from undigested food.
The large intestine prepares waste for elimination as feces (poop).
A variety of beneficial microbes, mainly bacteria, reside in the large intestine, fighting harmful germs and producing vitamins like vitamin K.
Strong muscles push the poop to the rectum, where nerves signal when it's time for elimination through the anus.
Feces mostly consist of water, food waste, and bacteria, with its brown color due to bile.
