digestive system. table 21.15 p. 1070 figure 21.21_1 weight (pounds) 100 120140160180 200 220 240...
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![Page 1: Digestive System. Table 21.15 p. 1070 Figure 21.21_1 Weight (pounds) 100 120140160180 200 220 240 260 410 50 52 54 56 58 510](https://reader030.vdocument.in/reader030/viewer/2022032723/56649d205503460f949f49aa/html5/thumbnails/1.jpg)
Digestive System
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Table 21.15
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p. 1070
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Figure 21.21_1
Weight (pounds)100 120 140 160 180 200 220 240 260
410
50
52
54
56
58
510
60
62
64
Heig
ht
Under
wei
ght
BM
I 1
8.5
Nor
mal
BM
I 18
.5–2
4O
verw
eight
BM
I 25
–29
Extr
emel
y ob
ese
BM
I 3
9
Obes
eBM
I 30
–39
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p. 1071
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Table 21.17B
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Figure 21.10B
Vein carryingblood to the liver
Musclelayers
Largecircular folds
Villi
Intestinal wall
Lumen
Nutrientabsorption
Villi
Lymphvessel
Bloodcapillaries
Epithelialcells
Lumen of intestine
Microvilli
Nutrient absorption
Fats
Blood
Lymph
Epithelial cells ofa villus
Aminoacidsand
sugars
Fattyacidsand
glycerol
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Figure 21.4_1
Key
Alimentary canalAccessory digestiveglands
Rectum
Anus
Smallintestine
Largeintestine
Stomach
Esophagus
Oralcavity
A schematic diagram of thehuman digestive system
Salivaryglands
Gall-bladder
Liver
Pancreas
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p. 1079
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Figure 21.5
Incisors
Canine
Premolars
Molars
“Wisdom”tooth
Tongue
Salivaryglands
Opening ofa salivarygland duct
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Figure 21.6A_4
Tongue
Epiglottis up
Larynx down
Trachea (windpipe)
Starting to swallow(sphincter contracted)
Esophagus
Esophagealsphincter
Pharynx
Bolus of food
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Figure 21.6A_5
Swallowing reflex(sphincter relaxed)
Epiglottis down
Larynx up
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Figure 21.6A_6
Swallowing completed(sphincter contracted)
Epiglottis up
Larynx down
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Figure 21.6B
Esophageal sphincter(contracted)
Bolus offood
Muscles contract,squeezing the bolusthrough the esophagus.
Muscles relax,allowing thepassagewayto open.
Bolus offood
Stomach
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Figure 21.8_1
Esophagus
Sphincter
Lumen (cavity)of stomach
Sphincter
Stomach
Smallintestine
Gastrin
Interiorsurfaceof the
stomach
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Figure 21.8_2
Release of gastric juice(mucus, HCl, and pepsinogen)
Pits
Epithelium
Mucouscells
Chief cells
Parietal cells
Gastricgland
Pepsinogen Pepsin(activeenzyme)HCl
ClH
Interiorsurfaceof the
stomach
3
2
1
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Figure 21.10A
Liver
Gall-bladder
Bile
Intestinalenzymes
Duodenum ofsmall intestine
Chyme
Stomach
Pancreas
Pancreatic juice
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Figure 21.10B
Vein carryingblood to the liver
Musclelayers
Largecircular folds
Villi
Intestinal wall
Lumen
Nutrientabsorption
Villi
Lymphvessel
Bloodcapillaries
Epithelialcells
Lumen of intestine
Microvilli
Nutrient absorption
Fats
Blood
Lymph
Epithelial cells ofa villus
Aminoacidsand
sugars
Fattyacidsand
glycerol
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Figure 21.10B_2
Villi
Lymphvessel
Bloodcapillaries
Epithelialcells
Lumen of intestineMicrovilli
Nutrient absorption
Fats
Blood
Lymph
Epithelial cells ofa villus
Aminoacidsand
sugars
Fattyacidsand
glycerol
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Figure 21.12
Cecum
Appendix
End ofsmallintestine
Largeintestine(colon)
Unabsorbedfood material
Smallintestine
Rectum
Anus
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Figure 21.10B_2
Villi
Lymphvessel
Bloodcapillaries
Epithelialcells
Lumen of intestineMicrovilli
Nutrient absorption
Fats
Blood
Lymph
Epithelial cells ofa villus
Aminoacidsand
sugars
Fattyacidsand
glycerol
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Copyright © 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings
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Copyright © 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings
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Copyright © 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings
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Copyright © 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings
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p. 1087
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Figure 21.20B