Digestive SystemDigestive System

By Hunter HawkinsBy Hunter HawkinsGrade 5Grade 5Fessenden schoolFessenden school

Digestive system organsDigestive system organs

LiverLiver Small intestine Small intestine Large intestineLarge intestine Pancreas Pancreas Stomach Stomach Gallbladder Gallbladder EsophagusEsophagus Rectum Rectum

Stomach Stomach Primary function is to kill Primary function is to kill

bacteria and break down bacteria and break down foodfood

Food is moved around to Food is moved around to mix with chemicals mix with chemicals

The chemicals (gastric The chemicals (gastric juices) breakdown food into juices) breakdown food into a cream-like liquid (chyme)a cream-like liquid (chyme)

This process takes 3 – 4 This process takes 3 – 4 hourshours

Chyme exits through the Chyme exits through the pyloruspylorus

Composed of 3 layers Composed of 3 layers

LiverLiver Largest organ in the bodyLargest organ in the body Detoxifies harmful Detoxifies harmful

substances during substances during metabolism processmetabolism process

Mixes the softened food Mixes the softened food with bile from the gall with bile from the gall bladderbladder

Bile breaks down the fat in Bile breaks down the fat in the food into dropletsthe food into droplets

Regulates many Regulates many

biochemical reactionsbiochemical reactions Made up of 4 lobesMade up of 4 lobes

Small IntestineSmall Intestine Absorbs the nutrients and Absorbs the nutrients and

minerals found in foodminerals found in food 3 primary methods of 3 primary methods of

nutrient absorption nutrient absorption Hero of digestive system Hero of digestive system Approximately 22 feet longApproximately 22 feet long Thousands of small fingers Thousands of small fingers

called villi line the walls called villi line the walls

Large IntestineLarge Intestine 2 main functions2 main functions Transports wasteTransports waste Absorbs water from the Absorbs water from the

remaining undigested foodremaining undigested food 5 feet long5 feet long Whatever body cannot put Whatever body cannot put

to use sent to large to use sent to large intestineintestine

Food spends about 12 hoursFood spends about 12 hours What is left is called feces What is left is called feces

and is pushed out the anal and is pushed out the anal openingopening

Made up of cecum, colon, Made up of cecum, colon, rectum, and anal canalrectum, and anal canal

Relationship with circulatory Relationship with circulatory systemsystem

Digestive system feeds nutrients to Digestive system feeds nutrients to the circulatory systemthe circulatory system

Absorbed into the bloodstream Absorbed into the bloodstream through the small intestine wallsthrough the small intestine walls

The blood transports the food The blood transports the food throughout the bodythroughout the body

Healthy effects on digestive Healthy effects on digestive systemsystem

Healthy eating (vegetables, green Healthy eating (vegetables, green food, 5 food groups)food, 5 food groups)

High fibre diet High fibre diet CleansingCleansing

Harmful effects on digestive Harmful effects on digestive systemsystem

Smoking Smoking Poor eating (fatty foods, junk food, Poor eating (fatty foods, junk food,

candy)candy) StressStress High alcohol consumptionHigh alcohol consumption

Common diseasesCommon diseases

Stomach ulcersStomach ulcers CancerCancer Chronic liver failureChronic liver failure

More interesting pictures More interesting pictures

Thank you for watchingThank you for watching

Little comic to be a good Little comic to be a good guyguy

References References

sciencebob.com sciencebob.com answers.comanswers.com wikipedia.org wikipedia.org google.images google.images youtube.comyoutube.com helium.comhelium.com Encyclopedia Britannica Humans Encyclopedia Britannica Humans

(book) (book)