(a) (i) What is the liquid part of the blood called?
(ii) Name one cell type found in the blood and give one function for this named cell type - Leaving Cert Biology - Question 13 - 2021
Question 13
(a) (i) What is the liquid part of the blood called?
(ii) Name one cell type found in the blood and give one function for this named cell type.
(b) The diagram ... show full transcript
Worked Solution & Example Answer:(a) (i) What is the liquid part of the blood called?
(ii) Name one cell type found in the blood and give one function for this named cell type - Leaving Cert Biology - Question 13 - 2021
Step 1
What is the liquid part of the blood called?
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Answer
The liquid part of the blood is called plasma.
Step 2
Name one cell type found in the blood and give one function for this named cell type.
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Answer
Red blood cells are a type of cell found in the blood. Their main function is to transport oxygen from the lungs to the body tissues and return carbon dioxide from the tissues back to the lungs.
Step 3
In your answer book, state which letter represents each of the following parts: (i) Septum
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Answer
The septum is represented by letter E.
Step 4
In your answer book, state which letter represents each of the following parts: (ii) Vena cava
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Answer
The vena cava is represented by letter A.
Step 5
In your answer book, state which letter represents each of the following parts: (iii) Aorta
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Answer
The aorta is represented by letter C.
Step 6
In your answer book, state which letter represents each of the following parts: (iv) Bicuspid valve
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Answer
The bicuspid valve is represented by letter D.
Step 7
Describe two ways the blood in the left ventricle differs from the blood in the right atrium.
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Answer
The blood in the left ventricle is higher in oxygen compared to the blood in the right atrium.
The blood in the left ventricle has lower levels of carbon dioxide (CO₂) compared to the blood in the right atrium.
Step 8
Where does the blood in structure B flow to next?
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Answer
The blood in structure B (the aorta) flows to the lungs.
Step 9
What is the purpose of structure D?
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Answer
The purpose of structure D (the bicuspid valve) is to prevent backflow of blood into the left atrium.
Step 10
Name one factor that causes the pulse rate to increase.
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Answer
One factor that causes the pulse rate to increase is exercise.
Step 11
What is meant by a closed circulatory system?
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Answer
A closed circulatory system means that blood remains in vessels and does not flow freely in the body cavity.
Step 12
Distinguish between an artery and a vein under the following headings: (i) Size of lumen (cavity)
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Answer
Arteries have a smaller lumen, while veins have a larger lumen.
Step 13
Distinguish between an artery and a vein under the following headings: (ii) Thickness of wall.
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Answer
Arteries have thicker walls compared to veins, which have thinner walls.
Step 14
Give one feature of capillaries which is related to their function.
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Answer
One feature of capillaries is that they are thin which allows for diffusion of gases and nutrients.
Step 15
Name another system that carries fluid in the body.
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Answer
The lymphatic system is another system that carries fluid in the body.
Step 16
Name the fluid carried by the system named at part (iv) above.
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The fluid carried by the lymphatic system is called lymph.
Step 17
Give two functions of the system named at part (iv) above.
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Answer
The lymphatic system returns excess tissue fluid to the bloodstream.
It helps to transport fats and fight infections by the action of white blood cells.
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