Download Review Presentation on the Digestive System

DO NOW
Date:
12/07
The function of the digestive
system is to break down the
food we eat for nutrients.
Brainstorm as many
structures of the digestive
system as you can.
ESSENTIAL QUESTION:
How do the structures of the digestive system work
together to process the food you eat?
OBJECTIVES:
-Review
Presentation on the Digestive System
-Digestive system notes to record the structures
and functions of the digestive system
Digestive System Notes
Glue Note Sheet to pg 91
Digestion Presentation
Use your sheet to complete notes on the
Digestive System.
Digestion Prezi
Mechanical vs Chemical Digestion
• Video
VENN DIAGRAM
Draw the following Venn Diagram in your
notebook on page 92. Use the following
information to fill it in.
Mechanical Digestion
Chemical Digestion
Mechanical Digestion
Mechanical digestion is the physical break down
of food into smaller pieces.
Mechanical Digestion
EXAMPLE:
CHEWING!
Mechanical Digestion
EXAMPLE:
Peristalsis:
The squeezing of muscles
in the digestive system
which forms a wave that
moves food along.
Chemical Digestion
Chemical Digestion is the chemical break down
of foods into smaller molecules.
Chemical Digestion
Example:
Enzymes in your saliva
and stomach begin
breaking up molecules in
your food.
Stomach acid
(Hydrochloric acid) also
breaks down fats,
proteins, and starch into
much simpler molecules
as shown in this diagram.
Chemical Digestion
**Notice how the large
molecule only break apart
into smaller pieces.
The shapes and colors do
not change. They simply
detach from one another.
DO NOW
Date:
12/08
Give one example of Mechanical
Digestion and one example of
chemical digestion.
ESSENTIAL QUESTION:
How do the mechanical and chemical digestion work
together to break down the food you eat?
OBJECTIVES:
-Complete
Digestive System Lab to demonstrate
and understand mechanical and chemical
digestion.
Digestion Lab Set-Up
A- Lab Clean Up Director
B- Beaker Manager
C- Lab Director
D- Materials Manager
Digestion Lab
Materials Managers:
1 Beaker
150 mL of Cola (Phosphoric Acid-H3PO4)
1 Ziploc bag
5 crackers`
1 filter paper
**If you have a gluten allergy, see your teacher
for a rice cracker.
Engage: Digestion
1. Put one cracker into your mouth. Hold it in
your mouth for 10 seconds. Start recording
your observations on your sheet.
2. Start to slowly chew the cracker.
3. Swallow the cracker. Pay attention to the way
it feels to have the food travel down your
esophagus.
Turn and Talk
With your elbow partner:
Discuss which forms of digestion
(mechanical/chemical) were involved in eating
your cracker.
Be prepared to describe your thoughts with
the class.
VIDEO
Digestive System
Digestion Lab
– Place 5 crackers into a sealable bag.
– Pour in 150 mL of cola into the bag and zip the bag
closed.
– Observe the crackers. Record any changes ln your
sheet.
– “Pump” the bag for three minutes.
– Observe and record what happens to the crackers
inside of the bag.
– Place filter paper on top of the beaker. Use the
rubber band to keep the filter paper in place.
– Using the spoon, slowly pour out the cola and
cracker mixture from the bag and into the filter
paper.
Exit Ticket
Complete the questions on the back of your
lab sheet.
Glue or tape it in to page 86
DO NOW
Date:
12/09 &
12/10
Describe the following as a chemical or
mechanical (physical) change?
1) Food being chewed by teeth
2) Food being broken down by the muscles of
the stomach
3) Saliva breaking down food during chewing
4) Stomach acid and enzymes breaking down
food in the stomach
ESSENTIAL QUESTION:
How are large molecules broken down
during digestion for the body to use?
OBJECTIVES:
-“Meet Your Food” to understand the large
molecules that you eat.
- Complete online simulation to understand
how large molecules are broken down during
digestion for your body to use.
ENGAGE:
Why do we eat food?
-TURN AND TALK
-Be prepared to share
EXPLORE: “Meet Your Food” JIGSAW
EXPERT GROUPS:
A- Report to Table 2/9
• Hamburger Patties (Protein)
B- Report to Table 3/8
• Hamburger Buns (Carbohydrates)
C- Report to Table 4/7
• Cheese (Fats)
D- Report to Table 5/6
• Lettuce and Tomato (vitamins/minerals)
EXPLORE:
EXPERT GROUPS:
Read the information assigned to your group.
Answer the following questions on page 71 in
your notebook and prepare to share your
information with others.
1)What large molecules are broken down when
you eat your assigned food?
2)Where is it digested in the digestive system?
3)What smaller molecules are formed when
the large molecule breaks down?
TAPE TO PAGE 87
NUTRIENT
Lettuce and Tomato
(Vitamin and
Mineral)
Beef Patty
(Protein)
Cheese
(Fats)
Bun
(Carbohydrates)
Large
Molecule
Small
Molecule
Where it is
Digested
EXPLORE:
• Move back to your table group
BUILD YOUR HAMBURGER:
-Show your Hamburger Part to your table group
-Share the molecules on the back
-Place your Hamburger Part in the Center of the
table and share your information
(LETTUCE< PATTY< CHEESE< BUN)
EXPLAIN:
Digestion Online Simulation
You will use the online simulation to complete
the “Journey Through the Digestive System”
Graphic Organizer
Voice Level 1 as you work
Glue into page 88
ELABORATE:
QUESTION: Can ENZYMES and STOMACH ACID
really digest large protein molecules into
smaller AMINO acids.
PROTEIN DIGESTION LAB:
-Read the first page carefully
-Complete the pre-lab quiz
-Put your Protein investigation sheet in your
folder for Friday
Digestion Lab Set-Up
A- Lab Clean Up Director
B- Test Tube Manager
C- Lab Director
D- Materials Manager
DO NOW
Date:
12/11
Complete in your notebook on page
You are a doughnut. From the point of view of a
doughnut, write a short story about how you
would be eaten and digested by a human being.
Use the following words in your story:
Mouth
Esophagus
Stomach
Small intestine
Large intestine
Absorbed
Enzymes
Stomach acid
Saliva
Carbohydrate
Glucose (sugar)
ESSENTIAL QUESTION:
How do the structures of the excretory system work to
rid your body of waste?
OBJECTIVES:
-Excretory system notes to record the structures
and functions of the excretory system
Reminders
• Take out your homework and make a pile for
the aisle.
Excretory System
• Tape your notes page into page 89.
• Use the following slides to to fill in the
diagram with information about the structures
and function of the excretory system.
• You will color it when finished.
The Human Excretory System
The function of the
excretory system is
the excrete (get rid
of) wastes that are
not helpful to the
body.
Waste
• Wastes that are removed
include carbon dioxide,
water, salt, urea and uric
acid.
• All excreted wastes travel at
some time in the blood.
Structures of the Excretory System
1.
2.
3.
4.
5.
Skin
Lungs
Liver
Large intestine
Urinary System
Think – Pair – Share:
Can you guess how these
structures are a part of
the excretory system?
Skin
Wastes such as excess
water, salt, urea and uric
acid are removed from
the body in sweat.
Lungs
Excess carbon dioxide
waste is removed
from the body when
we exhale.
CO2
Liver
The liver is a part
of what other
system?
The digestive
system
Liver
The liver has many functions,
including (but not limited to):
1. to produce substances that break down fats
2. produce urea (the main substance of urine)
3. make certain amino acids (the building blocks
of proteins)
4. filter harmful substances from the blood
(such as alcohol)
5. The liver is also responsible for producing
cholesterol. It produces about 80% of the
cholesterol in your body.
The Liver and Waste
• The liver produces
urea and uric acid
as a by-product of
the breakdown of
proteins.
• Urea and uric acid
are sent to the
kidneys to be
processed.
Liver
Large Intestine
• The large intestine
removes solid,
undigested food from
the body after it
passes through the
digestive system.
• Waste is stored in
rectum until it is
excreted from the
body as solid waste.
The urinary system
• The kidneys filter the
blood to form urine,
which is excess water,
salt, urea and uric
acid.
• Read about the
urinary system and
fill in the table as you
go.
Excretory System
•EXcretory System
•EXits the body
Exit Ticket
Answer the questions at the end of your notes
sheet.
Tape into page 90 (if you haven’t already.)