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(a) (i) Name the type of muscle found in the heart - Leaving Cert Biology - Question 9 - 2019
Question 9
(a) (i) Name the type of muscle found in the heart. (ii) Name the blood vessel that provides the heart muscle with oxygen. (b) Answer the following questions in... show full transcript
Worked Solution & Example Answer:(a) (i) Name the type of muscle found in the heart - Leaving Cert Biology - Question 9 - 2019
Step 1
Step 2
Step 3
In the space below, draw a diagram of a dissected heart and on it label the following:
Answer
To draw a dissected heart, ensure the diagram includes the following structures:
- Aorta: The large artery that carries oxygenated blood away from the heart.
- Bicuspid valve: Also known as the mitral valve, this valve controls blood flow from the left atrium to the left ventricle.
- Left ventricle: This chamber of the heart pumps oxygenated blood into the aorta.
Step 4
Step 5
Outline a safety step, specific to this task, to be taken before beginning the dissection.
Answer
Before beginning the dissection, it is crucial to wash the heart thoroughly to remove any contaminants. This helps ensure a safe working environment and reduces the risk of exposure to harmful bacteria.
Step 6
Describe how you carried out the dissection.
Answer
To carry out the dissection, I placed the heart on a dissection tray and secured it in position. I carefully identified the front and back of the heart to orient the dissection accurately. Using a scalpel, I made an incision along the left ventricle and opened the heart to expose the internal structures. Each part was examined and labeled accordingly, ensuring proper attention was paid to the aorta and bicuspid valve. After the dissection, all materials were disposed of correctly.