Sunday, November 15, 2015
Thursday, November 12, 2015
Heart Dissection Lab
1. The purpose of the pericardium is to protect the heart.
2. Arteries take blood away from the heart and veins bring blood to the heart. Valves have thinner walls and have one-way valves to prevent backflow.
3. The auricle inflates when blood pumps into the heart and increases the volume of the atrium.
4. There is more fat at the top of the heart near the atrium. The ventricles have thicker walls than the atria walls.
6.
7. The chordate tendinae and the papillary muscles are important to heart function because they
8.
9. The semi-lunar valves prevent blood from the atrium from entering the heart again.
10. Valve disease on the right side of the heart results in swelling in the feet and ankles because the blood returns to that area of the body. Since the tricuspid valves stops working, blood would go back through the inferior vena cava and back to the lower part of the body.
b) If valve disease occured on the left side of the heart, it would mess up the blood flow between the lungs and the left atrium. This would interrupt the flow of oxygenated blood to the rest of the heart.
11.
12. The left side of the heart deals with oxygenated blood and the right side deals with deoxygenated blood.
2. Arteries take blood away from the heart and veins bring blood to the heart. Valves have thinner walls and have one-way valves to prevent backflow.
3. The auricle inflates when blood pumps into the heart and increases the volume of the atrium.
4. There is more fat at the top of the heart near the atrium. The ventricles have thicker walls than the atria walls.
6.
8.
9. The semi-lunar valves prevent blood from the atrium from entering the heart again.
10. Valve disease on the right side of the heart results in swelling in the feet and ankles because the blood returns to that area of the body. Since the tricuspid valves stops working, blood would go back through the inferior vena cava and back to the lower part of the body.
b) If valve disease occured on the left side of the heart, it would mess up the blood flow between the lungs and the left atrium. This would interrupt the flow of oxygenated blood to the rest of the heart.
11.
12. The left side of the heart deals with oxygenated blood and the right side deals with deoxygenated blood.
13.
Unit 3 Reflection
Unit 3 was about the cardiovascular system and cardiovascular health. The cardiovascular system transports materials like oxygen and glucose to cells and removes waste materials from cells. It is made up of the heart, or pump, a network of tubes, and blood. Cardiovascular health is preventing heart diseases and strokes. Heart attacks are occur when blood supply to the myocardium is reduced or completely stopped. This results in damage to heart cells. A stroke occurs when an artery which supplies the brain becomes blocked. Both strokes and heart attacks can be caused by atherosclerosis, chronic inflammation in blood vessels. To prevent atherosclerosis or any cardiovascular disease, one should control blood pressure, cholesterol, and weight. One should eat healthfully, exercise, and manage stress as well. I would want to learn more about the treatments of heart attacks and stroke. I still have questions about the ways each treatment is different and how doctors decide which treatment they would use for their patients.
I enjoyed this unit and it was because of the labs. For example, doing the sheep heart dissection really put everything into perspective. It was so different from the diagrams and models we had looked at in class. Having to find the parts of the heart from memory and from definitions was challenging but I learned a lot from it. Towards the end of the unit, however, I started to slack off on reviewing my lecture notes. I think this set me back a bit because I didn't remember that material very well and a few days before the test I was trying to cram all that information into my head. For the rest of the semester I will make sure I fully understand the material to be able to apply it to real life situations.
I enjoyed this unit and it was because of the labs. For example, doing the sheep heart dissection really put everything into perspective. It was so different from the diagrams and models we had looked at in class. Having to find the parts of the heart from memory and from definitions was challenging but I learned a lot from it. Towards the end of the unit, however, I started to slack off on reviewing my lecture notes. I think this set me back a bit because I didn't remember that material very well and a few days before the test I was trying to cram all that information into my head. For the rest of the semester I will make sure I fully understand the material to be able to apply it to real life situations.
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