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Digestive system: obtains nutrients cells need to survive, grow, and function Ingestion Propulsion = movement –Muscle tissue Digestion = breakdown of ingested.

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Presentation on theme: "Digestive system: obtains nutrients cells need to survive, grow, and function Ingestion Propulsion = movement –Muscle tissue Digestion = breakdown of ingested."— Presentation transcript:

1 Digestive system: obtains nutrients cells need to survive, grow, and function Ingestion Propulsion = movement –Muscle tissue Digestion = breakdown of ingested materials –Mechanical –Chemical w/ enzymes Absorption = transport of nutrients from digestive tract into circulation Elimination = pooping (defecation)

2 Figure 26.1 Digestive Tract (primary organs)

3 Figure 26.3

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6 Figure 26.4

7 Figure 26.12

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10 Figure 26.4

11 Figure 26.14

12 Anterior view Stomach Jejunum Ileum Appendix Duodenum Mesentery Ileocecal junction Cecum Ascending colon Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

13 Figure 26.7

14 Figure 26.8

15 Figure 26.16

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18 Figure 26.9

19 Figure 26.15

20 Figure 26.10

21 MucosaSubmucosaMuscularisSerosa (mucous membrane) Epithelium Lamina propria Muscularis mucosae Circular muscle layer Longitudinal muscle layer (serous membrane; visceral peritoneum) Connective tissue layer Peritoneum Intestinal gland Lymphatic nodule Ducts from glands Gland in submucosa Enteric plexus Myenteric plexus Submucosal plexus Blood vessels Nerve Mesentery Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

22 20,000x (c) Villus Epithelial cell Lacteal (lymph) Capillary (blood) Epithelial cell Microvilli Microvilli of epithelial cell surface Villi Blood capillary network Lacteal Epithelium Intestinal gland Duodenal gland Top of circular fold (b) (d)

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24 Figure 26.15

25 Figure 26.16

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27 Figure 26.18

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30 Figure 26.20

31 Figure 26.21

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33 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Liver Left and right hepatic ducts Common hepatic duct Gallbladder Cystic duct Hepatic portal vein Common bile duct Accessory pancreatic duct Minor duodenal papilla Major duodenal papilla Hepatopancreatic ampulla Duodenum (cutaway view) Anterior view Pancreas Pancreatic duct Spleen

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36 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Pyloric part Muscularis Longitudinal muscle layer Circular muscle layer Oblique muscle layer Submucosa Mucosa Rugae Serosa Body Greater curvature Lesser curvature Fundus Esophagus Location of lower esophageal sphincter Gastroesophageal opening Cardiac region Pylorus Pyloric sphincter Pyloric orifice Pyloric canal Pyloric antrum Duodenum (a)

37 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. (a) Circular folds Epithelium Submucosa Circular muscle Longitudinal muscle Serosa Jejunum Duodenum Pancreatic ducts Head of pancreas Major duodenal papilla Minor duodenal papilla Common bile duct from liver

38 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Transverse colon Right colic flexure (hepatic flexure) Ascending colon Ileum Ileocecal valve Cecum Vermiform appendix Left colic flexure (splenic flexure) Descending colon Haustra Teniae coli Epiploic appendages Sigmoid colon Internal anal sphincter External anal sphincter (b) Anterior view Anal canal Rectum (a) Anterior view

39 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Liver Inferior vena cava Right lobe Falciform ligament Left lobe Round ligament Gallbladder (a) Anterior view Gallbladder Quadrate lobe Right lobe Caudate lobe Bare area Coronary ligament Inferior vena cava (b) Inferior view Coronary ligament Left lobe Hepatic veins Esophagus Inferior vena cava (c) Superior view Hepatic duct Hepatic portal vein Hepatic artery Left lobe Lesser omentum Falciform ligament Right lobe Bare area Coronary ligament Porta

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41 Figure 26.5

42 Figure 26.6

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45 s.m. s.l.

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