Blood is a liquid tissue - Junior Cycle Science - Question b - 2006
Question b
Blood is a liquid tissue. The diagram shows blood viewed through a microscope.
(i) Name any two components of blood shown in the diagram.
Component 1:
Component 2... show full transcript
Worked Solution & Example Answer:Blood is a liquid tissue - Junior Cycle Science - Question b - 2006
Step 1
Name any two components of blood shown in the diagram.
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Answer
Platelets
Red blood cells (or White blood cells)
Step 2
Give the function of each of the components of blood you have named.
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Answer
Platelets help in clotting blood to prevent bleeding.
Red blood cells transport oxygen throughout the body.
Step 3
Why has the left ventricle got a thicker wall than the right ventricle?
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Answer
The left ventricle has a thicker wall than the right ventricle because it needs to pump blood around the entire body, requiring more force compared to the right ventricle, which pumps blood only to the lungs.
Step 4
What causes a person's pulse?
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Answer
A person's pulse is caused by the heart beat, which involves the pumping of blood and changes in blood pressure in an artery.
Step 5
How is a person's pulse rate measured using this method?
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Answer
To measure a person's pulse rate using this method, count the beats (pulses) for one minute.
Step 6
Clearly account for the rise and fall in pulse rate experienced by the athlete.
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Answer
After intense exercise, the athlete's pulse rate rises to 120 due to the increased demand for oxygen and energy. As the athlete rests, the pulse rate decreases to 63 as the body requires less oxygen and is able to remove carbon dioxide more effectively.
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