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Warm Up
• The Digestive System by Sharon Fabian
Answer all questions!
If you were not here on Friday, you MUST take the exam today!!
The Digestive System
• It is complicated
• There are lots of parts and lots of processes that happen
• We will talk about them all, but we are going to break to down
• Please focus on the things we are talking about…
What is it?
Digestive System
The body system that turns food weEat into fuel/energy that our cells needto function and keep us alive
Organs Involved
Mouth, Esophagus, StomachSmall Intestine, Pancreas,Liver, Gall Bladder, Large Intestine
Importance
Cells need energy to keep you alive. We cannot get energy from food until it has been digested.
Picture
Functions of the Digestive System
1. Breaks down food into smaller molecules our cells can use
2. Absorbs food into our circulatory system (blood)
3. Eliminates waste products
Digestion
Function: Process of breaking food into small pieces and removing nutrients
Importance: Turns the food we eat/drink into energy to keep us alive
Other Info: there are 2 types of digestion
Video
Quiz
2 Types of Digestion
Mechanical Digestion -
Chemical Digestion -
Mechanical Digestion
What Happens?Physical changes > food is broken into smaller
pieces
Where?Mouth (teeth/tongue chew and mix food up)Stomach (muscles mash & pound food)
ImportanceFood must be broken up to swallow and digest
Chemical Digestion
What Happens?Food is changed into different substances, saliva
and enzymes break down
Where?Mouth > SalivaStomach > Stomach AcidSmall Intestine > Enzymes
ImportanceFood must be fully broken down before nutrients
can be taken out
Video
• http://www.brainpop.com/health/bodysystems/digestivesystem/
Nutrients
Function –Chemicals/Substances that a living needs to live and grow.
Importance – the energy cells need to do their jobs
Other Info – Calories = how much nutrients or energy a food will give you
Parts of the Digestive System
Mouth –Function: Teeth and tongue work to break food
into small pieces, saliva begins chemical digestion
Importance: Where digestion begins
Other Info:Mechanical = teeth and tongueChemical = Saliva mixing with food
Salivary Gland
Function: in mouth and throat, release saliva
Importance: need saliva to mix with food to help break it down and swallow
Saliva
Function: A watery liquid that contains chemicals to
help break down food
Importance: needed for chemical digestion
Other info:Commonly known as spit
Esophagus
Function – carries food from mouth to stomach
Importance – uses involuntary muscle action to push food down to stomach
Other info –
Solid food = 8 seconds down
Liquid = 2 seconds down
Stomach
Function: further digest food both chemically and mechanically using stomach acid and muscles
Importance: food storage, food broken down more
Other info: food stays in here for 4-6 hours
Independent Work / HW
Mighty Mouth
The Stomach
The Esophagus
Exit Ticket
1. Why is the digestive system important to human life?
2. What are 2 organs involved in the digestive system?
Warm Up
• Put HW on desk to be checked
Review Sheet > work on your own – you may use notes and HW sheets if you need it
You will have 12 minutes
Warm Up
Put HW on desk to be checked – you have 3min to finish if you did not
Take out packet from yesterday
We will finish yesterday vocabulary
Warm Up/Review Answers
1. 3 functions of digestive system
Break down food
Absorb nutrients/food into blood
Eliminate Waste
2. Why is digestion/the digestive system so important to human life?
Answer = cells need energy to live, energy is released from food when it is digested
3. Where does digestion start?Answer = the mouth
4. What happens to food during mechanical digestion?Answer = it is broken into smaller pieces
5. Where in the body does chemical digestion happen?Answer = Mouth(Saliva)Stomach(Stomach AcidSmall Intestine (Enzymes
6. The name of the tube that brings food from the mouth to the stomach
Answer = Esophagus
7. How does saliva help break down food?Answer = has chemicals in it that help break down
food during chemical digestion
8. In the stomach, what happens to food?Answer = food is stored, broken down to a think liquid to be ready for small
intestine, emptied into small intestine
9. What role does your mouth play in chemical digestion?
Answer = Saliva in the mouth begins chemical digestion
10. According to the HW article “the stomach”, where does food go after the stomach?
Answer = Small Intestine
HW Answers
Continuing Vocabulary
Peristalsis
Function – a series of wavelike muscle contractions which push food down your esophagus and mix food in your stomach
Important – how food moves through body
http://www.youtube.com/watch?v=YJ34Qx6hzJk
http://www.youtube.com/watch?v=o18UycWRsaA
Small Intestine Video
Small Intestine
• Function – Use Villi (like fingers that stick out from the surface of the small intestine) to remove nutrients from food and put it into blood.
Importance – your body needs nutrients, once in to the blood nutrients can be taken all over
Other info – about 25ft long
Called “small” because the tube is small around
Small Intestine Picture
Villi
Pancreas
Function – produces enzymes that help digest protein, fats and carbs
Importance – without the pancreas it would be hard to digest food or get nutrients from it
Other info -
Liver
Function – produces bile (an enzyme) and processes nutrients in the blood
Important – Bile helps the body produce fat and break down food – also has jobs in other body systems
Other info = (under diaphragm)
Gall Bladder
Function – stores bile until the body needs it, helps digest fat
Importance – you can live without it, helps the body digest faster
Other info = color green
Enzymes
Function – help break down food
Important – chemicals the body needs to get all nutrients out of food
Other info – come from the pancreas and liver, stored in gall bladder
Recap
All nutrients are taken out of food in the small intestine
- Enzymes made in the pancreas and liver help to break down food while it is in the small intestine
Large Intestine
• Function – food goes here after small intestine, remove water from food (What is left is waste material your body can’t use)
• Importance – Would be dehydrated if large intestine did not do its job.
• Other info – After the large intestine, digestion is complete. AKA Colon
Large Intestine Video
Rectum
Function – the final part of the large intestine that stores waste until it “exits” your body
Importance – Help keep waste in place until you are ready to use the bathroom
Your Digestive System Labeling
Use 49B
Exit
1. Which part of the digestive system removes nutrients and puts them in the blood?
A. Large IntestineB. StomachC. Small IntestineD. Mouth
2. Which part of the digestive system remove water from the remains of food?
A. Large IntestineB. StomachC. Small IntestineD. Mouth
3. Which parts of the digestive system produce enzymes?
Warm Up
• Study packet and yesterday’s review for quiz!!! > SILENTLY on YOUR OWN
• Put HW on desk to be checked
HW Review
Quiz
• Eyes on your own paper• No Talking• Write all answers on quiz paper
• Textbook 45B – 50B• Check your reading questions• 4-5 on 50• Write questions and answers
Exam Review
Number grade = Grade on exam
Letter grade = 2nd Quarter Final Grade
Each question was worth 3.3 pointsExtra credit = 2 pointsPartial credit was given for short answer
questions
Exam ReviewCorrect Answers
1. B
2. B
3. D
4. A
5. D
6. B
7. B
8. C
9. B
10. A
11. C
12. C
13. B
14. B
15. B
16. B
17. D
18. B
19. C
20. B
21. C
22. D
23. C
24. C
25. D
26. D
27. Cilia and Mucus are in your nose. They help clean and filter the air you breath. Without them germs and particles would get in your body
28. Antibiotics because they kill bacteria
29. White blood cells fight, killOr attack pathogens (germs,Bacteria and viruses)
Quiz retake
Old quizzes returned
- Correct answers on notebook paper
- Do not change anything on original quiz
2nd Block Seating Chart
KolbyGadalupe
MayaZyon
SyncereGeovanna
Angela
AntonioWilmerJudy
Lakeeva
QuantoneAllayah
KamrenAndy
SerenaTyler
Tyreese
Front of Room
Back of Room
Door
Take out leveled curriculum work from Friday!
3rd Block Seating Chart
KatlynMylesSayra
EdwinJamariKionna
JonathanLuis
Delvin
Jermaine
Vinnaja
KaylaKelnasia
DemarcusAdriana
DJ
Front of Room
Back of Room
Door
Take out leveled curriculum work from Friday!
5th Block Seating Chart
JalenJoseDrew
ChrisEldin
Emely
Jennifer BMasonXavien
TarvaryaMarvin
Flor
DeaundrayAlfonsoDajah
Moesha
RamonGadalupe
Front of Room
Back of Room
Door
1st Block Seating Chart
LarahMitzy
Alexander JermaineRandy
YomiraMercedes
CarlosTayviona
Ty’ReyonnaJovaughn
Alexis
JacorianFranklinBryan
JarrenCyreneJennifer
Front of Room
Back of Room
Door
Study for quiz retake!!!!!!!!!
Leveled Curriculum
Due date depends on behavior
5 signatures = due end of class Tomorrow
Less than = due beginning of class tomorrow
Leveled Curriculum
Directions
Working on your own
Talking only when allowed
Worksheets on front table
Due end of class tomorrow!
Homework
Leveled Curriculum
- Can you finish in one class period?
Quiz Corrections
- 5 points added to grade for each you redo and get correct
- Rewrite question and answer on separate sheet of notebook paper
Warm Up
• Sit in the same seat as yesterday
• Take out your Leveled Curriculum Work– Begin working
1st Block Quiz Retake Return
• You must take ownership of your education and your grades
• I do everything I can to give you the information, but I cannot memorize it or study it for you
• You must start to take this class and school more seriously if you want to be successful
Class Quiz Averages
1st – 54.6 (F)
2nd – 80.4 (C)
3rd – 80 (C)
5th – 78 (C)
Quiz Retake Assignment
For each question you answered wrong on the retake… THE 2nd TIME… copy the correct answer 3 times
*as soon as you finish you will work on your leveled curriculum… take 40 minutes, too bad
Intermediate Level
• Use textbook page 46B and note packet to create a mini poster about peristalsis– You must have the following
• Explain what it is• How does it work• Why is it importance• Picture
Leveled Curriculum
Due at the end of class (unless you got below 5 signatures). No exceptions
*when finished staple all work together (not labeled diagram) with assignment sheet on top.
Behavior Guidelines1. When allowed to
talk, talk only to the people at your table
2. Focus on the work you need to do
3. Finish early = extra credit assignment
Learning Check
- Put everything away except for your pen/pencil
- Not a quiz grade, but you must act like it is- No talking- No looking at other people’s papers
Learning Check Vocab
Pancreas Mouth
Bile Mechanical
Small Intestine Chemical
Large Intestine Nutrients
Liver Stomach
Water Gall Bladder
Esophagus Saliva