Digestive System Model

1

Tongue (3)

• taste

2

Teeth (2)

• biting, slicing, tearing, chewing food

3

Submandibular and Sublingual Gland (5)

• Produces mainly serous saliva

• Innervation: CN VII: Facial Nerve

4

Mouth (1)

• inhalation/exhalation of air

5

Parotid Salivary Gland (4)

• Produces mainly serous saliva

• Innervation: CN IX: Glossopharyngeal Nerve

6

Pharynx (6)

• conducts air to larynx

7

Esophagus (7)

• sends food from oropharynx to stomach

8

Esophagus (7)

• sends food from oropharynx to stomach

9

Longitudinal Muscle Layer (26)

• Mixing/ Churning/ Propulsion (of food)

10

Gallbladder (10)

• stores and concentrates bile from liver

11

Pyloric Sphincter (31)

• Controls Chyme entry from Stomach to Duodenum

12

Duodenum (11)

• digestion of food

13

Rugae (30)

• ↑ Surface Area for Digestion

14

Oblique Muscle Layer (28)

• Mixing/ Churning/ Propulsion (of food)

15

Circular Muscle Layer (27)

• Mixing/ Churning/ Propulsion (of food)

16

Stomach Serosa (29)

• Reduces friction between Stomach & Abdominal Wall

17

Stomach Fundus (25)

• secrete mucus

18

Stomach (8)

• stores food

19

Esophagus (7)

• sends food from oropharynx to stomach

• gullet

20

Common Hepatic Duct (33)

• Sends bile from Right/Left Hepatic Duct to Cystic Duct

21

Cystic Duct (32)

• Sends bile from Common Bile Duct to Gallbladder

22

Common Bile Duct (34)

• Sends Bile from Cystic Duct to Duodenal Papilla

23

Gallbladder (10)

• stores and concentrates bile from liver

24

Duodenum (11)

• digestion of food

25

Stomach (8)

• stores food

junction?

Hepatopancreatic Ampulla

• recieves pancreatin from pancreas

26

Liver (9)

• produces bile to emulsify fat

• metabolize glucose

27

Gallbladder (10)

• stores and concentrates bile from liver

28

Large Intestine

• absorbs H2O and electrolytes

29

Vermiform Appendix (24)

• filters lymph

30

Small Intestine

• digestion of food

31

Large Intestine

• absorbs H2O and electrolytes

32

Pancreas (12)

• produces insulin and glucagon

33

Stomach (8)

• stores food

34

Duodenum (11)

• digestion of food

35

Esophagus (7)

• sends food from oropharynx to stomach

36

Liver (9)

• metabolizes glucose

• produce bile to emulsify fat

37

Gallbladder (10)

• stores and concentrates bile from liver

38

Jejunum (13)

• absorption of nutrients

39

Ileocecal Valve (15)

• Controls entry of digested food from Ileum to Cecum

40

Ileum (14)

• Absorbs Vitamins (especially Vitamin B12)

41

Small Intestine

• digestion of food

42

Large Intestine

• absorbs H2O and electrolytes

43

Pancreas (12)

• produces insulin + glucagon

44

Stomach (8)

• stores food

45

Duodenum (11)

• digestion of food

46

Esophagus (7)

• sends food from oropharynx to stomach

47

Liver (9)

• metabolizes glucose

• produces bile to emulsify fat

48

Gallbladder (10)

• stores and concentrates bile from liver

49

Right Colic Flexure (18)

• Bend on right side between Ascending Colon & Transverse Colon

50

Ascending Colon (17)

• absorbs H2O and electrolytes

51

Cecum (16)

• absorbs H2O and electrolytes

52

Vermiform Appendix (24)

• filters lymph

53

Rectum (23)

• absorbs H2O and electrolytes

54

Sigmoid Colon (22)

• absorbs H2O and electrolytes

55

Small Intestine

• digestion of food

56

Descending Colon (21)

• absorbs H2O and electrolytes

57

Transverse Colon (19)

• absorbs H2O and electrolytes

58

Left Colic Flexure (20)

• Bend on left side between Transverse Colon & Descending Colon

59

Pancreas (12)

• produces insulin and glucagon

60

Stomach (8)

• stores food

61

Duodenum (11)

• digestion of food

62

Esophagus (7)

• sends food from oropharynx to stomach

63

Intestinal Fold (35)

• Has Villi with Brush Border Microvilli

64

Villi (38)

• Absorb nutrients (from small intestine to blood)

65

Vascular Network (red and blue) (36)

66

Intestinal Lymph Drainage (green) (37)

67

Venule (blue)

• Send O2-poor blood away from Small Intestine Villi

68

Arteriole (red) (41)

• Supply O2-rich blood to Small Intestine

69

Lymphatic Vessel (green) (40)

• Absorb lymph/fat

70

Goblet Cell (44)

• Produces/secretes mucus

71

Capillary Network (purple) (43)

• Gas & nutrient exchange w/ Small Intestine Villi

72

Goblet Cell (44)

• Produces/secretes mucus

73

Villus (39)

• Absorbs nutrients (from small intestine to blood)

74

Villi (38)

• Absorb nutrients (from small intestine to blood)

75

Villi (38)

• Absorb nutrients (from small intestine to blood)