Blood is made up of plasma and blood cells - Leaving Cert Biology - Question 14 (b) - 2013
Question 14 (b)
Blood is made up of plasma and blood cells. What is plasma?
What is the function of white blood cells?
Where in the body are white blood cells produced?
Some people ... show full transcript
Worked Solution & Example Answer:Blood is made up of plasma and blood cells - Leaving Cert Biology - Question 14 (b) - 2013
Step 1
What is plasma?
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Answer
Plasma is the liquid part of blood that carries cells, nutrients, waste products, and hormones throughout the body.
Step 2
What is the function of white blood cells?
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The function of white blood cells is to fight disease and protect the body against infections.
Step 3
Where in the body are white blood cells produced?
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White blood cells are produced in the bone marrow.
Step 4
What factor is present in their blood that makes it positive?
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The factor present that makes the blood group B positive (B+) is the Rhesus factor.
Step 5
1. Name the structure in the heart that controls the heartbeat.
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The structure that controls the heartbeat is called the pacemaker.
Step 6
2. Where is this structure located in the heart?
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The pacemaker is located in the right atrium of the heart.
Step 7
What causes the sound of a heartbeat?
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The sound of a heartbeat is caused by the closing of the valves in the heart.
Step 8
Name the blood vessels that supply the heart cells with blood.
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The blood vessels that supply the heart cells with blood are the coronary arteries.
Step 9
Mention two ways to maintain a healthy heart.
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To maintain a healthy heart, one can eat less fat, exercise regularly, avoid excess stress, eat less salt, and not smoke.
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