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Learning Target: Identify the main function of the digestive system.

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1 Learning Target: Identify the main function of the digestive system.
Monday April 3, 2017 Learning Target: Identify the main function of the digestive system. Science Starter: 1. Return all graded papers 2. Turn in Body Systems Workbook pgs and extra credit pgs 3. Classwork 22– 1AB, 1D, 1E Supplies: Digestive System Workbook & Classwork #22

2 Daily Agenda Worth the Wait forms due Friday April 28
Test Corrections due Thursday April 6 Heartbeat Papers returned Turn in Body Systems Workbook pgs Immune System Extra Credit pgs Finish Wonderful World of Digestion pg. 8 Label pg. 10 Digestive System Exit Ticket—Organ Systems

3 Wonderful World of Digestion
Pg. 8

4 Digestive System

5 Closing/ Exit Ticket

6 Learning Target: Identify the main function of the digestive system.
Tuesday April 4, 2017 Learning Target: Identify the main function of the digestive system. Science Starter Classwork 22– 2B Supplies: Digestive System Workbook & Classwork #22

7 Daily Agenda Worth the Wait forms due Friday April 28
Test Corrections due Thursday April 6 Heartbeat It all starts in the mouth lab—pg. 13 Notes—pgs Exit ticket– pg. 13 (Show Mrs. Hinds or Mrs. Bustillos…due tomorrow if you didn’t finish today.)

8 It all starts in the Pg. 13 in the Digestive System Workbook
Read introduction Answer the prediction question Step 1 Step 2—we will do this as a class. Wait for instructions to begin. Record time on Step 3…use the timer from the board Answer Step 4 question Mark through step 5 Reflection questions 1-5

9 Digestive System pgs

10 Functions of the Digestive System
Ingestion = food enters the mouth

11 Functions of the Digestive System
Ingestion = food enters the mouth Digestion = process that breaks food down into small molecules

12 Functions of the Digestive System
Ingestion = food enters the mouth Digestion = process that breaks food down into small molecules Mechanical digestion = food is chewed and churned Chemical digestion = breaks down large food molecules into smaller molecules to be absorbed by cells

13 Functions of the Digestive System
Ingestion = food enters the mouth Digestion = process that breaks food down into small molecules Absorption = small molecules of food are taken into the body cells

14 Functions of the Digestive System
Ingestion = food enters the mouth Digestion = process that breaks food down into small molecules Absorption = small molecules of food are taken into the body cells Elimination = wastes made of unabsorbed food molecules pass out of the body

15 Which is not a function of the digestive system?
Breaking down food into molecules the body can use Absorbing food molecules into the blood to deliver to the body Changing waste into molecules the body can use Eliminating undigested waste from the body

16 Organs of the Digestive Tract
Mouth = digestion starts here

17 Organs of the Digestive Tract
Mouth = digestion starts here Tongue & teeth mechanically break food up

18 Organs of the Digestive Tract
Mouth = digestion starts here Tongue & teeth mechanically break food up Saliva chemically digests food Saliva = mostly made of water, also contains mucus & ptyalin (an enzyme)

19 Organs of the Digestive Tract
Mouth = digestion starts here Tongue & teeth mechanically break food up Saliva chemically digests food Saliva = mostly made of water, also contains mucus & ptyalin (an enzyme) When swallowing, epiglottis (a small flap of tissue) automatically closes over the trachea (windpipe)

20 Organs of the Digestive Tract
Esophagus Smooth muscles force food into the mucus-lined esophagus Rhythmic muscular contractions (peristalsis) push food downward

21 Organs of the Digestive Tract
Stomach Food undergoes mechanical digestion when stomach muscles churn the food Chemical digestion happens when hydrochloric acid (HCl) and pepsin break down the complex proteins Peristalsis pushes the food toward stomach’s exit

22 Which is not an example of mechanical digestion?
Teeth chewing food Tongue breaking up food Smooth muscles in stomach churning food Pepsin & HCl breaking down proteins

23 What are the muscle contractions that push food through the digestive system called?
Elimination Peristalsis Epiglottis Pepsin

24 What is this structure? Mouth Epiglottis Esophagus Stomach

25 Organs of the Digestive Tract
Small Intestine (6 meters long) Most digestion happens here Intestinal juice (full of enzymes) breaks down food

26 Organs of the Digestive Tract
Small Intestine (6 meters long) Most digestion happens here Intestinal juice (full of enzymes) breaks down food Digestive Helpers Liver = bile is produced here (Bile breaks up fats like dish detergent breaks up grease)

27 Organs of the Digestive Tract
Small Intestine (6 meters long) Most digestion happens here Intestinal juice (full of enzymes) breaks down food Digestive Helpers Liver = bile is produced here (Bile breaks up fats like dish detergent breaks up grease) Gall bladder = bile is stored here until released into the small intestine

28 Organs of the Digestive Tract
Small Intestine (6 meters long) Most digestion happens here Intestinal juice (full of enzymes) breaks down food Digestive Helpers Liver = bile is produced here (Bile breaks up fats like dish detergent breaks up grease) Gall bladder = bile is stored here until released into the small intestine Pancreas = produces pancreatic juices that are released into the small intestine to break down proteins,starches, & fats

29 Organs of the Digestive Tract
Small Intestine (6 meters long) Most digestion happens here Intestinal juice (full of enzymes) breaks down food Digestive Helpers Liver Gall bladder Pancreas Digested food is absorbed through the villi into a network of blood vessels that carry the nutrients to all parts of the body

30 Organs of the Digestive Tract
Small Intestine (6 meters long) Most digestion happens here Intestinal juice (full of enzymes) breaks down food Digestive Helpers Liver, Gall bladder, Pancreas Digested food is absorbed through the villi into a network of blood vessels that carry the nutrients to all parts of the body e) By the time food leaves the small intestine, it is empty of all nutrients except water

31 Where does most digestion take place?
Mouth Stomach Small intestine Liver

32 Which is true about bile?
Bile breaks down proteins. Bile is produced in the liver. Bile is stored in the pancreas. Bile is released into the stomach.

33 What is this structure? Liver Stomach Gall bladder Pancreas

34 Organs of the Digestive Tract
Large Intestine (1.5 meters long) Undigested food spends hours here & most of the water is absorbed

35 Organs of the Digestive Tract
Large Intestine (1.5 meters long) Undigested food spends hours here & most of the water is absorbed Helpful bacteria living in large intestine make vitamins K & B

36 Organs of the Digestive Tract
Large Intestine (1.5 meters long) Undigested food spends hours here & most of the water is absorbed Helpful bacteria living in large intestine make vitamins K & B Materials not absorbed form into solid waste (dead bacteria, some fat & protein, undigested food, dried out parts of digestive juices & old intestinal cells)

37 Organs of the Digestive Tract
Large Intestine (1.5 meters long) Undigested food spends hours here & most of the water is absorbed Helpful bacteria living in large intestine make vitamins K & B Materials not absorbed form into solid waste (dead bacteria, some fat & protein, undigested food, dried out parts of digestive juices & old intestinal cells) Solid waste passes into the rectum and is stored until it is eliminated from the body through the anus

38 Which process occurs in the large intestine?
Digested food is absorbed. Undigested food is absorbed. Water is added to undigested food. Water is absorbed from undigested food. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

39 Which structure is the large intestine?
B C D A B C D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

40 What do the bacteria in the large intestine do?
Make you sick Make bile Make vitamins Make food 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

41 This is due tomorrow if not completed today!
Closing/Exit Ticket Finish pg. 13 in the workbook and show Mrs. Hinds or Mrs. Bustillos for credit. This is due tomorrow if not completed today!

42 Learning Target: Identify the main function of the digestive system.
Wednesday April 5, 2017 Learning Target: Identify the main function of the digestive system. Science Starter: No Classwork Question today Turn to pg. 2 in your workbook and answer What are the main functions of the digestive system? Supplies: Digestive System Workbook

43 Daily Agenda Worth the Wait forms due Friday April 28
Test Corrections due tomorrow Heartbeat EARLY RELEASE TODAY…See Schedule TEA Gateway activity on pgs of workbook You will have today and part of tomorrow to work on this assignment. The site is linked on my homepage. If you finish this then you may work on Diggin into Digestion…linked on homepage.

44 Mrs. Hinds Website Part 1—pgs. 14-15 in workbook
Part 2—If you finish everything

45 Learning Target: Identify the main function of the digestive system.
Thursday April 6, 2017 Learning Target: Identify the main function of the digestive system. Science Starter: No Classwork Question today Turn to pg. 2 in your workbook and answer What are the main functions of the digestive system? Supplies: Digestive System Workbook


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