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1.15 Spysverteringstelsel

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Natuurwetenskappe

Graad 4

Lewe en lewenswyse

Module 17

Die spysverteringstelsel

Aktiwiteit:

Om kennis te maak met die mens se spysverteringstelsel en enkele belangrike daarin te benoem

[lu 2.1]

Kom ons kyk hoe werk die spysverteringstelsel. Jou liggaam het voedsel nodig om te groei en gesond te bly. Daar is ‘n lang buis wat van jou mond af dwarsdeur jou liggaam loop tot by die opening waar die kos die liggaam verlaat. Die boonste deel van die buis is taamlik reguit, maar die onderste deel is redelik gekronkel. Daar gebeur verskeie dinge met jou kos terwyl dit deur hierdie buis gaan.

Wanneer jy die kos kou, maal jou tande dit fyn en met behulp van die speeksel kan jy dit afsluk.

Nou word die kos deur die slukderm na die maag gestoot. Daar is spiere in die wande van die slukderm wat outomaties saamtrek om die kos aan te stoot. Ons noem hierdie beweging peristalse .

Die kos word in die maag deur die spiere in die maagwand gemeng, fyngemaal en geroer.

In die dunderm word die voedingstowwe uit die kos gehaal en met die bloed na die lewer en ander liggaamsdele vervoer.

Die orige kos beweeg nou deur die dikderm en alle voedsel wat jou liggaam nie nodig het nie, word deur die liggaam uitgeskei.

Opdrag:

Voltooi die skets deur byskrifte in te vul

Skryf ‘n goeie sin om te verduidelik waarom babas net van melk kan leef.

Assessering

LU 2

KONSTRUKSIE VAN WETENSKAPKENNIS Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

 

Dit is duidelik wanneer die leerder:

2.1   betekenisvolle inligting onthou;

2.2       inligting kategoriseer.

 

Memorandum

DIE SPYSVERTERINGSTELSEL

  1. Mond
  2. Slukderm
  3. Maag
  4. Dunderm
  5. Dikderm

Questions & Answers

Discuss the differences between taste and flavor, including how other sensory inputs contribute to our  perception of flavor.
John Reply
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Ummi Reply
omeprazole
Kamara
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Renee
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Renee
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Omeprazole Cimetidine / Tagament For the complicated once ulcer - kit
Patrick
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Nency Reply
Not really sure
Eli
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include: 1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
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Oyindarmola Reply
Anatomy is the identification and description of the structures of living things
Kamara
what's the difference between anatomy and physiology
Oyerinde Reply
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
what is enzymes all about?
Mohammed Reply
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
Wulku Reply
little girl okay how does the stomach protect itself from the damaging effect of HCL
Wulku
it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
Kamara
function of digestive system
Ali Reply
function of digestive
Ali
the diagram of the lungs
Adaeze Reply
what is the normal body temperature
Diya Reply
37 degrees selcius
Xolo
37°c
Stephanie
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Mark
36.5
Simon
37°c
Iyogho
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
Stephanie
37A c
Wulku
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Diya Reply
anaemia is the decrease in RBC count hemoglobin count and PVC count
Eniola
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acid
Mary
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Elisha Reply
anatomy of the female external genitalia
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Organ Systems Of The Human Body (Continued) Organ Systems Of The Human Body (Continued)
Theophilus Reply
what's lochia albra
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Source:  OpenStax, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
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