Name ___________________________________________________
Date _____________________________ Period ________________
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Includes…
Mouth
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Esophagus
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Stomach
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Small intestine
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Large intestine
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Liver
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Pancreas
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Mouth
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Liver
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Pancreas
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Rectum
produces bile, helps break down medicines and fats
Pancreas
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Appendix
water is absorbed
Liver
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Small Intestine
nutrients are absorbed
Large intestine
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Gall Bladder
physical(mechanical=churning motion as the stomach is
made up of smooth muscle) and chemical (hydrochloric acid
and enzymes such as pepsin) digestion occurs
Small intestine
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Stomach
smooth muscle, transports food to stomach by peristalsis
Stomach
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Physical (mechanical=tearing or biting or chewing) and
chemical (saliva contains enzymes that begin the digestion
process by starting to break down carbohydrates) digestion
occurs
Esophagus
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Esophagus
Large Intestine
Break down food into a form that the body can use (glucose).
Structure info:
Digestive System Notes
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Its function is to…
produces insulin, which helps lower your blood sugar
How is structure and function related?
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The small intestines are long and have increased surface area (due
to finger-like structures called villi that completely line the inside of
the structure) to obtain the highest absorption rate.
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Balanced diet
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Drink lots of water
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Exercise
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helps things move along,
Do not smoke.
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Among the many reasons to quit smoking, it contributes
digestive problems such as heart burn, ulcers, and
gallstones.
Diseases/Conditions of the digestive system:
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Cystic fibrosis
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production of thick mucus blocks the ducts in the pancreas.
This blockage prevents digestive juices from entering into
the intestines.
Gastroesophageal Reflux Disease (GERD)
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Ulcers are open sores or lesions that can develop on the walls of the
esophagus, stomach and duodenum. This condition can be caused
by various factors, like, stress, lifestyle, medications, etc.
FUN facts:
1. Every 2 weeks, the human stomach produces a new layer of mucous
lining; otherwise the stomach will digest itself.
Taking care…
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is one of the most common diseases of the digestive system
and the characteristic feature of this condition is heart burn.
Otherwise known as acid reflux disease, this condition is
caused by the abnormal reflux of the contents in the
stomach (including acids) to the esophagus.
2. The human liver performs 500 different functions.
3. Liver is the largest and heaviest internal organ of the body and weighs
about 1.6 kilos.
4. The Liver is the only organ of the body, which has the capacity to
regenerate itself completely even after being removed almost completely.
5. Liver cells take several years to replace themselves.
6. A healthy liver processes 720 liters of blood per day.
7. The human stomach contains about 35 million small digestive glands.
8. The human stomach produces about 2.5 liters of gastric juice every day.
9. In an average person, it takes 8 seconds for food to travel down the food
pipe, 3-5 hours in small intestine and 3-4 days in the large intestine.
10. The human body takes 6 hours to digest a high fat meal and takes 2
hours for a carbohydrate meal.