science 8 about the digestive system.pptx

this powerpoint presentation is intended for the grade 8 students with the subject of science.

1. NAME ME: Mouth Tongue Teeth Esophagus Stomach Liver

2. The Digestive System Studio Shodwe

3. Digestive system is digestion , It breaks down food mechanically and chemically Mechanically -   Purely physical process such as c hewing, as well as tongue movements that help break food into smaller bits Chemically – A process in which saliva and other enzyme break food into smaller Remember: The journey of the food starts from the mouth down to the anus takes about 18-20 hours.

4. There are 5 process of digestion Ingestion Digestion Absorption Assimilation Egestion

5. Ingestion - It is the journey of taking in food or any substance into the body through the mouth Digestion - is the second process involved in digestive system. and breakdown the food into smaller pieces - Both chemical and mechanical digestions begin immediately in the mouth.

6. The teeth cut, crush, and break it apart into tiny pieces while the salivary glands produces saliva that helps soften foods and the tongue mixes the food and saliva to formed into a moist ball called bolus so it can be easily swallowed. Saliva contains of salivary amylase - the enzyme that breaks down or convert starch into smaller carbohydrate. Bolus

7. Epiglottis is a flap-like structure at the back of the throat that closes over the trachea preventing food from entering it. It is located in the Pharynx. Then the pharynx has open to swallow. Bolus

8. bolus  Once food is swallowed, it should move down the esophagus in about three seconds.   E sophagus - a tube that attaches the mouth to the stomach. (20cm long) Peristalsis – Is the process that push and transport foods and liquids in small sections to the stomach .

9. Bolus Stomach - is a J-shaped, bag-like muscular organ that can hold approximately one liter of fluid and food. Stomach Stomach - Store food

10. Chyme Small intestine The walls of the stomach have special cells that produce gastric juices like hydrochloric acid and pepsin that begin the chemical breakdown of proteins. Chyme is a semifluid material formed from bolus that is acted upon by the gastric juices It takes four hours before the food or chyme pushes into the small intestine

11. Chyme Small intestine Duodenum is the first and shortest part of the small intestine that starts at the lower end of the stomach and extends for about 20 cm to 25 cm in length. Duodenum

12. Mouth Salivary Amylase Stomach Hydrochloric acid Pepsin Duodenum Pancreatic Amylase Pancreatic Lipase Small Intestine Lactase Maltase Sucrose – Isomaltose Peptidase

13. Summary of Enzymes act in Digestion Process Amylase, and lactase breaks down carbohydrates into sugars. Lipase breaks down fats into fatty acids. Trypsin and Peptidase breaks down protein into amino acids. The production and release of enzymes and acids in the digestive system is called Secretion

14. Liver Directly affects digestion by producing bile Bile helps digest fat filters out toxins and waste including drugs and alcohol and poisons. 14

15. Gall Bladder Stores bile from the liver, releases it into the small intestine. Fatty diets can cause gallstones

16. Pancreas Produces digestive enzymes to digest fats, carbohydrates and proteins Regulates blood sugar by producing insulin

17. Now it's... QUIZ TIME!

18. On a ¼ sheet of paper, write the name of each colored organ: 1.Green: 2.Red: 3.Pink: 4.Brown: 5.Purple: 6.Green: 7.Yellow: 8 – 10. List down at least 3 enzyme that can be found in our body

19. How’d you do? 1. Green: Esophagus 2. Red: Stomach 3. Pink: Small Intestine 4. Brown: Large Intestine 5. Purple: Liver 6. Green: Gall Bladder 7. Yellow: Pancreas 8 – 10. Amylase, lactase, maltase, lipase, trypsin Great Job!

20. 02 01 Human Body Goals Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Sed tempus placerat velit a placerat. Cras suscipit est at mauris.

21. Important Data Data 01 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Data 02 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Data 03 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris.

22. PROPOSED TIMELINE

23. Phase 01 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Phase 02 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Phase 03 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Phase 04 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Phase 05 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Phase 07 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Phase 06 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris.

24. TAKE CARE OF THE HUMAN BODY Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Conclusions FINAL CONCLUSION Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam euismod id sem quis accumsan. Sed tempus placerat velit a placerat. Cras suscipit est at mauris.

25. Our Team Claudia Alves Lead Researcher Olivia Wilson Lead Researcher Aaron Loeb Lead Pharmacist

26. THANK YOU To see this presentation Studio Shodwe

27. Resource page