digestive system. in your journal: for each system you will need: – systems main function &...
TRANSCRIPT
![Page 1: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/1.jpg)
Digestive System
![Page 2: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/2.jpg)
In your journal:
• For each system you will need:– Systems Main Function & Organs– Main Problems & Disease– How to Best Care for this system– Recent Findings & How it Interact with other
systems
![Page 3: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/3.jpg)
Main Organs Where does digestion begin?
Teeth – hold, tear, chew foods
Salivary glands – secretes juices into mouth
Tongue – moves food mass to back of mouth
Esophagus – passageway
Stomach – churns food & adds gastric juices
Small intestines – absorbs nutrients
Liver – produces digestive juice (bile)
Pancreas – adds more digestive juice for breakdown
Gall bladder – stores bile until needed, secrets into SI
Large intestines – stores unused solid, water is absorbed
here Rectum – holds solid waste, controls release
![Page 4: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/4.jpg)
• Digestion time varies depending on the individual. For most healthy adults, it's usually between 24 and 72 hours. After you eat, it takes about six to eight hours for food to pass through your stomach and small intestine.
• Elimination of undigested food residue through the large intestine usually begins after a total of 24 hours. Complete elimination from the body may take several days.
![Page 5: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/5.jpg)
Main Functions
• Break Down of food (mechanical & chemical)
• Absorption of nutrients
• Elimination of waste
![Page 6: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/6.jpg)
Function: of Digestion
The Breakdown of food into basic building blocks
(nutrients)
Mechanical: chewing & churningChemical: digestive juices
Mouth (carbohydrates) Stomach (proteins) Small Intestine (fats)
![Page 7: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/7.jpg)
Parts of the Digestive system
TeethSalivary Glands
EsophagusStomach
LiverGallbladder
PancreasSmall Intestine
Large Intestine (Colon)Rectum
Anus
![Page 8: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/8.jpg)
Mouth
Teeth:Mechanical breakdown of foods
Salivary Glands: Chemical breakdown of carbohydrates
(starches & sugars)
![Page 9: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/9.jpg)
StomachGastric Juices breakdown proteins:
1. Hydrochloric acid2. Pepsin (enzyme that digests protein)
Smooth Muscles in walls churn food to make
Chyme: Creamy mixture of food and gastric juices
Sphincter @ entrance of stomach, prevents food from backing up
![Page 10: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/10.jpg)
Liver
• Bile: Greenish fluid breaks down Fats
1. made in Liver2. stored in Gallbladder
• Also changes toxins (poisons) into harmless substances.
• Examples of Body’s Toxins1. Poisonous Foods, Plants, Animals2. Alcohol & Drugs (including medicines
(ibuprofen…)
![Page 11: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/11.jpg)
`Pancreas
Produces:
1. Insulin – a hormone that metabolizes sugars in the blood
2. Digestive Enzymes - for fats and proteins
![Page 12: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/12.jpg)
Small Intestine 21-23 feet long…and…1 inch in diameter
• Villi: finger-like projections in the walls of the small intestine
lined with capillaries(smallest vessels in the circulatory system).
1. Major digestion of fats2. All undigested food is broken down3. Most nutrients absorbed
![Page 13: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/13.jpg)
Large Intestine5-6 feet long…and
…2-3 inches in diameter
• Last Chance!!
Final nutrients pass into the blood stream
1. Water
2. Vitamins
3. Mineral Salts
![Page 14: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/14.jpg)
Common ProblemsUlcers
Open sores in the mucous membrane of the GI tractIndigestion
Overwhelming of the stomachHeart burn
Stomach acid passes up to the esophagusGallstones
Crystallized deposits of cholesterol and other substances that collect in the gallbladder
Appendicitis Inflammation in the appendix, usually caused by bacteria
(lower right)
![Page 15: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/15.jpg)
How to care FOR THIS SYSTEM:
• Drink water• Eat healthy (variety & high fiber)• Avoid fatty foods• Eat food slowly• Don’t eat under stress
![Page 16: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/16.jpg)
Foods that benefit the Digestive System
• Yogurt,Apples, peaches carrots and cabbage are especially helpful with lower GI tract.
• To avoid constipation: (build up of stools minus liquid)…oats, fruits, veggies, fiber rich food
![Page 17: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/17.jpg)
How it interacts with other systems
• Circulatory/Cardiovascular– takes nutrients from small intestine to rest of
body• Muscular– Muscles contract pushing food through
(peristalsis)• Nervous– Tells brain when you are hungry-
• Immune– Acid in stomach kills pathogens
![Page 18: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/18.jpg)
![Page 19: Digestive System. In your journal: For each system you will need: – Systems Main Function & Organs – Main Problems & Disease – How to Best Care for this](https://reader031.vdocuments.us/reader031/viewer/2022012922/56649d925503460f94a7968a/html5/thumbnails/19.jpg)