(a) (i) What is the purpose of the valves in the heart?
Prevent backflow of blood - Leaving Cert Biology - Question 9 - 2014
Question 9
(a) (i) What is the purpose of the valves in the heart?
Prevent backflow of blood.
(ii) What structure separates the right side of the heart from the left side?
T... show full transcript
Worked Solution & Example Answer:(a) (i) What is the purpose of the valves in the heart?
Prevent backflow of blood - Leaving Cert Biology - Question 9 - 2014
Step 1
What is the purpose of the valves in the heart?
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Answer
The primary purpose of the valves in the heart is to prevent backflow of blood, ensuring that blood flows in one direction through the heart's chambers.
Step 2
What structure separates the right side of the heart from the left side?
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Answer
The septum is the structure that separates the right side of the heart from the left side.
Step 3
How did you distinguish between the left side and the right side of the heart?
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I distinguished between the left side and the right side of the heart by noting that the left side is firmer or thicker than the right side.
Step 4
What was the main instrument you used for the actual dissection?
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The main instrument used for the actual dissection was a scalpel. Scissors may also be accepted.
Step 5
Describe how you carried out the dissection.
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To carry out the dissection, I made an incision to cut along the left or right side, carefully exposing the internal structures while avoiding damage to the tissues.
Step 6
Name the valves found at the base of both the aorta and the pulmonary artery.
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The valves found at the base of both the aorta and the pulmonary artery are the semi-lunar valves.
Step 7
Based on your dissection, draw a diagram to show and label the following parts: bicuspid valve, left atrium, left ventricle.
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The diagram should include the bicuspid valve, left atrium, and left ventricle, appropriately labeled to show their positions in relation to each other.
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