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Digestive System 3 Intestines
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#1 #7 #9 Small Intestines 1.) Small Intestines
help digest and absorb nutrients from our food #1 #7 #9
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1.)Small intestines: A. Duodenum B. Jejunum C. ileum
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Small Intestine #1 duodenum - upper region; connected to stomach
1st to receive chyme Receives enzymes from the liver and pancreas Length= 26cm
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2.) Liver (#4 Common bile duct)
secretes acids that break down fat
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3.) Pancreas: (#12 Pancreatic duct)
secretes enzymes that break down proteins, lipids, and carbohydrates secrete insulin to control sugar levels
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#7 jejunum - middle region
Small Intestine #7 jejunum - middle region Length= 2.5m
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connects to large intestine
#9 ileum - lower region connects to large intestine Small Intestine Length= 3.5m
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break down of food video
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Small Intestine villi– has finger-like projections which increase surface area for absorption
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4.) Large Intestines/Colon: absorb water and vitamins from food
(#2,3,6,8,10:) 4.) Large Intestines/Colon: absorb water and vitamins from food 6 Length= 1.5 m 2 8 3 10 movement of the large intestines video breaking down nutrients video
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Rectum 5.) Rectum: (#11) Peristalsis occurs to push feces into anus
Contain stretch receptors that give you the desire to defecate Rectum
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6.) Anus: (#5)– outside opening
Internal Anal Sphincter: under involuntary control External Anal Sphincter: under voluntary control
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