2 oral cavity/mouth gall bladder stomach pancreas large intestine rectum 11. Identify each structure labeled in the diagram.oral cavity/mouthgall bladderstomachpancreaslarge intestinesmall intestinerectum
3 In the small intestine/villi 12. Where does protein digestion begin?13. What is the function of F?14. Where are nutrients absorbed into the blood?In the stomachAbsorb waterIn the small intestine/villi
4 Small intestine/duodenum 15. What does C produce? Where does it go?16. What is the function of G?17 Chemical digestion is completed in this structure.18. What type of digestion occurs in A?Pancreatic juiceSmall intestine/duodenumstore bilesmall intestine/duodenummechanical and chemical
5 peristalsis To push food through the digestive tract 19. What is the name of this process? What is its function?20. Where in the digestive tract does this process occur?peristalsisTo push food through the digestive tractesophagus, stomach, small intestine, large intestine
6 21. What is structure F? What is the function of this substance? 22. Identify structure B. What kind of digestion occurs here?23. What is the function of structure A?liverto produce bilestomachChemical digestion of proteins by pepsinMechanical digestion (wall of stomach churns food)Pushes food down into the stomach using peristalsis
7 Liver (F) – produces bile that goes to the SI 24. Through which of these structures does food pass?25. Which organs are not part of the digestive tract? How do they aid in digestion?Esophagus (A)Small intestine (D)Stomach (B)Liver (F) – produces bile that goes to the SIGall bladder (E) – stores bilePancreas (C) – releases pancreatic juice into SI
8 26. Describe the role of the small intestine in digestion. Where most chemical digestion occursWhere chemical digestion is completedLined with VILLI which absorb nutrients into the blood
9 27. Identify the labeled organs. A - mouthB - EsophagusC – StomachD – PancreasE - Large intestineF - AppendixG - Small intestineH – Gall bladderI - Liver
10 28. Through what organs does food pass? (in order) mouthEsophagusStomachSmall intestineLarge intestineRectumAnus
11 Bile – into small intestine 29. Where excess water reabsorbed?30. What occurs in structure G?31. What does I produce? Where does it go?32. This is where chemical digestion begins.33. This is where chemical digestion ends.Large intestineVilli absorb nutrients into bloodBile – into small intestinemouthSmall intestine/duodenum
12 34. Identify organs where there is no digestion occurring. EsophagusLiverSalivary glandsPancreasGall bladder
13 35. Explain the difference between mechanical and chemical digestion. Mechanical is a physical breakdown, while chemical digestion breaks down complex molecules into more simple molecules using enzymes.
14 36. Where does mechanical digestion begin? How? Mouth – teeth grind up food37. Where does chemical digestion begin? How?Mouth – ptyalin/salivary amylase in saliva starts to chemically break down starches into sugar38. Where does chemical digestion end?Duodenum (small intestine)
15 39. Where does most chemical digestion occur? Duodenum (small intestine)40. Where and how are nutrients absorbed once food has been completely broken down.They are absorbed in the villi of the small intestine by diffusion.
16 41. Identify the digestive organ described. a. Where the digestion of protein begins.stomachb. Where mechanical digestion begins.mouthc. Site of water absorption.Large intestined. All chemical digestion is completed here.Duodenum (SI)
17 41. Identify the digestive organ described. e. Where the breakdown of starch begins.mouthf. Where bile is stored.Gall bladderg. Releases many enzymes into the SI.pancreas
18 41. Identify the digestive organ described. h. Pushes food into the stomach.esophagusi. Where the absorption of nutrients occurs.Small intestine/villij. Lining is protected by a mucus layer.stomach
19 42. What enzyme is found in saliva? What does it break down? Salivary amylase/ptylinCarbohydrates (starches sugar)43. What enzyme is produced in the stomach? What does it break down?Pepsinprotein
20 44. There are many enzymes found in intestinal juice made in the small intestine. What do they break down?Carbohydrates and proteins45. There are many enzymes found in pancreatic juice. What do they break down?Carbohydrates, lipids, proteins46. Is bile an enzyme? Why or why not?Bile is not an enzyme because it emulsifies fat. IT breaks down large droplets of fat into smaller droplets which is mechanical digestion, not chemical digestion.