The diagram shows part of a transverse section through the small intestine - Leaving Cert Biology - Question 15 - 2012
Question 15
The diagram shows part of a transverse section through the small intestine.
(i) Name structures X and Y.
(ii) What process results from the contraction of the two ... show full transcript
Worked Solution & Example Answer:The diagram shows part of a transverse section through the small intestine - Leaving Cert Biology - Question 15 - 2012
Step 1
Name structures X and Y.
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Answer
Structure X is the Villus, and structure Y is the Lacteal.
Step 2
What process results from the contraction of the two parts of tissue Z?
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Answer
The contraction of the two parts of tissue Z results in Peristalsis.
Step 3
Indicate which of the following most accurately represents the pH of the contents of the small intestine.
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Answer
The pH of the contents of the small intestine is Alkaline.
Step 4
Name two glands that pass their secretions into the small intestine.
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Answer
The two glands that pass their secretions into the small intestine are the Pancreas and the Liver.
Step 5
What are symbiotic bacteria?
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Symbiotic bacteria are bacteria living on or in another organism involving benefit.
Step 6
Give two functions of symbiotic bacteria in the human alimentary canal.
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Symbiotic bacteria assist in vitamin production.
They compete with pathogens and can help reference digestion and inhibit cancer cells.
Step 7
Where in the human alimentary canal is most water absorbed?
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Most water is absorbed in the Colon, also referred to as the large intestine.
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