The diagram shows a region of tissue that includes body cells and parts of the circulatory and lymphatic systems - Leaving Cert Biology - Question 3 - 2014
Question 3
The diagram shows a region of tissue that includes body cells and parts of the circulatory and lymphatic systems.
(a) Name part C.
(b) What type of blood vessel is... show full transcript
Worked Solution & Example Answer:The diagram shows a region of tissue that includes body cells and parts of the circulatory and lymphatic systems - Leaving Cert Biology - Question 3 - 2014
Step 1
Name part C.
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Answer
C = Lymph vessel
Step 2
What type of blood vessel is A?
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Answer
A = Arteriole (accept artery)
Step 3
If a transverse section of A were viewed under the microscope state one way in which it would differ from a transverse section through B.
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Answer
A would have a narrower (or thicker) lumen or thicker wall and no valves.
Step 4
Give two functions of the lymphatic system.
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Answer
Maintains a constant level of extracellular fluid or drains fluid to blood.
Manufacture of lymphocytes / filtering bacteria / fighting infection / transport of named material.
Step 5
Give one way in which lymph differs from blood.
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Lymph contains no red blood cells or no hemoglobin / no platelets / no clotting proteins / higher fat level (accept correct color difference).
Step 6
Name a major blood vessel that returns the blood in B to the heart.
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Answer
Vena cava.
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