Answer the following questions about the structures and functions of the heart & post to your blog:
- Compare the structure of the atria and ventricles - how are they different? Why is that?
The right atria is only 2 mm thick, but the right ventricle is 4-5 mm thick. The left atria is 3 mm thick, while the left ventricle is 8-15 mm thick. The atrias are about one third the size of ventricles.
2. Did you notice a difference between the veins and arteries entering and leaving the heart? How is their structure different?
Both the arteries and veins have 3 layers in them, but the arterial walls are much thicker than the veins.
3. Describe the valves that you found in the heart - what are their functions?
The valves that we found were small tissues near the pulmonary arteries, veins, and between the atrias and ventricles. Their functions are to prevent backflow of blood into the aorta.
4. What surprised you about dissecting the heart? Why?
Thomas and I were surprised at how big the heart was, and how strong the chordae tendinae were. I was also surprised on how small the atria were compared to the ventricles.
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