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9.6 – Absorption Process

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1. 9.6 – Absorption Process
2. Learning Intentions 15th JanEveryone should complete:1-Absorption Model2-Visking
3. 1 - AbsorptionThe alimentary canal (or gut)
4. Think…..What does the piece of tube in
5. Absorption ‘The passage of small food molecules through
6. 2 - Visking Tubing Experimenta diagram of
7. 3 – Small IntestineSmall, soluble food molecules
8. 1. A Large Surface AreaThe small intestine
9. Слайд 9
10. Villi ‘finger-like folds in the surface of the small intestine’(Singular – villus)
11. 2. Thin WallEach villus has an extremely thin wall -only one cell thick -rapid absorption
12. 3. Good Blood SupplyEach villus is supplied
13. http://kitses.com/animation/swfs/digestion.swf
14. This powerpoint was kindly donated to www.worldofteaching.comhttp://www.worldofteaching.com
15. Скачать презентанцию

Learning Intentions 15th JanEveryone should complete:1-Absorption Model2-Visking Tube Experiment3-Small IntestineMost people will complete:The Check Test for 9.6The Home Practice for 9.6Some people might start:Problem solving Torrance Intermediate 2 Biology textbook p 240

Слайды и текст этой презентации

Слайд 19.6 – Absorption Process
Intermediate 2 Biology

9.6 – Absorption ProcessIntermediate 2 Biology

Слайд 2Learning Intentions 15th Jan
Everyone should complete:
1-Absorption Model
2-Visking Tube Experiment
3-Small Intestine

Most

people will complete:
The Check Test for 9.6
The Home Practice for

9.6

Some people might start:
Problem solving
Torrance Intermediate 2 Biology textbook
p 240 ‘Applying Your Knowledge’

Learning Intentions 15th JanEveryone should complete:1-Absorption Model2-Visking Tube Experiment3-Small IntestineMost people will complete:The Check Test for 9.6The

Слайд 31 - Absorption
The alimentary canal (or gut) is a long

tube inside the body
Any food in the alimentary canal is

still outside the cells of the body
To get inside the molecules of the food have to be able to pass through the wall of the alimentary canal

Now try the ‘Model Absorption’ kit!

1 - AbsorptionThe alimentary canal (or gut) is a long tube inside the bodyAny food in the

Слайд 4Think…..
What does the piece of tube in the model represent?

Why

can the food molecules inside the tube still be regarded

as ‘outside’ the body?

Which food molecules in the model were able to pass through the wall of the tube most easily? Why was this?

Why were the protein molecules in the model unable to pass through the wall of the tube?

Now complete the ‘Notes’!!!

Think…..What does the piece of tube in the model represent?Why can the food molecules inside the tube

Слайд 5Absorption
‘The passage of small food molecules through the wall of

the alimentary canal and into vessels that can transport them

within the body’

Absorption ‘The passage of small food molecules through the wall of the alimentary canal and into vessels that

Слайд 62 - Visking Tubing Experiment
a diagram of the experiment when

set up

what the visking tubing was being used to represent

how

you tested for starch and glucose and a table of your results

an explanation of the results in terms of size of the food molecules involved

2 - Visking Tubing Experimenta diagram of the experiment when set upwhat the visking tubing was being

Слайд 73 – Small Intestine
Small, soluble food molecules are absorbed through

the wall of the small intestine

To absorb food molecules efficiently

the small intestine has three main adaptations…….

3 – Small IntestineSmall, soluble food molecules are absorbed through the wall of the small intestineTo absorb

Слайд 81. A Large Surface Area
The small intestine is very long
-6m

long

The inner surface on the intestine is folded
-covered with many

finger-like projections called villi
-greatly increase the surface area in contact with digested food

1. A Large Surface AreaThe small intestine is very long -6m longThe inner surface on the intestine is

Слайд 9

Слайд 10Villi
‘finger-like folds in the surface of the small intestine’

(Singular –

villus)

Villi ‘finger-like folds in the surface of the small intestine’(Singular – villus)

Слайд 112. Thin Wall
Each villus has an extremely
thin wall
-only one

cell thick
-rapid absorption

2. Thin WallEach villus has an extremely thin wall -only one cell thick -rapid absorption

Слайд 123. Good Blood Supply
Each villus is supplied with blood vessels

to receive the absorbed foods
-glucose/amino acids/vitamins/minerals are absorbed into blood

capillaries
-products of fat digestion absorbed into lacteal

Now complete the ‘Notes’!!

3. Good Blood SupplyEach villus is supplied with blood vessels to receive the absorbed foods -glucose/amino acids/vitamins/minerals are

Слайд 13http://kitses.com/animation/swfs/digestion.swf

http://kitses.com/animation/swfs/digestion.swf

Слайд 14This powerpoint was kindly donated to www.worldofteaching.com

http://www.worldofteaching.com is home to

over a thousand powerpoints submitted by teachers. This is a

completely free site and requires no registration. Please visit and I hope it will help in your teaching.

This powerpoint was kindly donated to www.worldofteaching.comhttp://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers.

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