The Digestive Tract · 2013-02-19 · 2/19/2013 2 Function of the Digestive System The breakdown of food into small molecules. Then absorbed into the body for energy. Major Organs:

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Kristyanne Cabrera

Katherine DeJesus

Valeria Roa

Period 2

The Digestive Tract

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Function of the Digestive System� The breakdown of food into small molecules.

� Then absorbed into the body for energy.

Major Organs: Oral Cavity

� More commonly referred to as the mouth.

� This is where the digestion process begins.

� Food physically chewed; broken down with saliva.

� Mechanical digestion is done by teeth.

� Chemical digestion is accomplished with saliva.

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Major Organs: Pharynx

� More commonly referred to as the throat.

� The passageway that connects the mouth and the esophagus.

Major Organs: Esophagus

� Muscular tube where food passes.

� Food is passed through the esophagus through peristalsis.

� Muscle action that squeezes food through the esophagus.

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Major Organs: Stomach

� Located at the end of the esophagus.

� Breaks down food molecules into smaller molecules.

� Molecules eventually absorbed into small intestine,

Major Organs: Small Intestine

� Located between stomach and large intestine.

� Contains small finger like ridges called villi.

� Absorbs nutrients from food into blood stream.

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Major Organs: Pancreas

� A large gland behind the stomach.

� Produces digestive enzymes and insulin

� These “juices” regulate digestion and blood sugar levels

Major Organs: Liver

� Large rounded glandular organ

� Located in the abdomen of vertebrates

� involved in processing digestive products and neutralizing toxins

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Major Organs: Colon

� Also known as Large Intestine.

� Absorbs remaining water from indigestible molecules.

� Stores and eliminates waste from body.

Major Organs: Rectum

� Acts as a temporary storage for waste.

� Rectal wall stimulates desire to remove waste matter.

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Major Organs: Anus

� Opening where non-liquid waste products are released.

Basic Structure of the Stomach

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Basic Structure of the Pancreas

Diseases: Colon Cancer� Symptom’s: constipation, long lasting diarrhea

� Signs: bright red or very dark blood in the stool

� Treatments: Surgery, chemotherapy

� Facts: One of the most diagnosed cancers in the US.

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Diseases: Urinary Tract Infection � Signs: Nausea, fatigue, and pain while peeing

� Symptoms: burning sensation when urinating, blood in the stool

� Treatments: Medicine

� Facts: Affects both male and female.

� Facts: UTI affects more women than males.

Disease: Chronic Gastritis� Symptoms: Sense of weight after eating

� Signs: Sense of weight after eating

� Treatment: Healthy diet

� Facts: Many people have no symptom of the condition.

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Bibliography� http://7gtscience.wikispaces.com/Digestive+System+B

-+Main+Organs+and+Their+Functions

� http://www.cliffsnotes.com/study_guide/Function-of-the-Digestive-System.topicArticleId-277792,articleId-277747.html

� http://www.cdc.gov/cancer/colorectal/basic_info/facts.htm

� http://www.cdc.gov/cancer/colorectal/basic_info/facts.htm