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Transcript

The Road Ahead

By: Keelah A.

Parts of the Digestive System+Functions

Digestive System

The Mouth is the beginning of it all, it's where eating and chewing happens, and it also holds your teeth. Mechanical Digestion happens and you also have your salivary glands plus Chemical Digestion (release enzymes that digest starches). Next is the Pharynx, it pushes food into the esophagus so it's not breathed in. Following the Esophagus, it's function is moving food to the stomach and the stomach takes in food from esophagus, mixes it, breaks it down, and passes it on to the small intestine in small portions. Now we are down to the small intestine it helps further digest food from stomach. It also absorbs vitamins, minerals, carbohydrates, fats, proteins, and water. The last stop before exiting the Digestive System is the large ntestine it absorbs water and changes the waste from liquid into stool.

Mechanical vs. Chemical

Different Digestions

Your riding past Mehcanical digestion now or physical digestion. It involves physically breaking down food substances into smaller particles to more efficently undergo chemical digestion. After leaving mechanical digestion you reach the next phase of Chemical digestion. Chemical digestion breaks food down further using enzymes into a form thats absorbale into the blood stream.

Mechanical

Pictures

Source: https://www.youtube.com/watch?v=Nws6SVDNqLs

Chemical

Pictures

Source: https://www.youtube.com/watch?v=yyuQMi0V-SE

Functions of enzymes

On the path of digestion, your going to see what even breaks down food to provide the body with the things it needs. Amylase is in the saliva, it digest starches (complex carb) to produce maltose (disaccharide). Protease is in the pancreatic juice, digest proteins, fats (in bile), and starches to produce peptides & amino acids, fatty acids, and glycerol, maltose. Lipase is in the pancreatic juice, digest proteins, fats (in bile), and starches to produce peptides & amino acids, fatty acids, and glycerol, maltose.

Digestive Enzymes

Chemcial Digestion

Chemical Digestion

There is a round-a-bout on chemical digestion on our brocheure. We revisit chemical digestion and the things our body uses. The end results of chemical digestion of carbs is glucose, fructose, galactose. You may ask where it occurs and the answer is that It occurs in the mouth. Proteins produce into amino acids. Where does it occur? It occurs in the stomach. The chemical digestion of fats is 3 fatty acid molecules and 1 glycerol molecule. Where does it occur? It occurs in the stomach.

Liver and Pancreas Digestion

Liver & Pancreas

You are almost to the end of our digestive brocheure. We are now reaching the Pancreas and Liver. The Pancreas produces digestive enzymes that help break down proteins, carbohydrates, and fats. The liver produces bile, bile helps you digest fats.

Villi

I hope you've enjoyed this brocheure of the digestive system. We are at the end where we talk about villi. Each villus carries a central core which is further made up of one vein, one artery, a muscle strand, a lymphatic capillary (lacteal) which is located centrally, and connective tissue that provides structures with support.

Villi

Source https://www.youtube.com/watch?v=itXca_Ko8dI

Villi absorbs nutrients from the liquid mixture called chyme produced in the stomach from the food we eat. The function and strcuture relate because it aids in increasing the membranes surface.

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