Heart Dissection videos

Sheep Heart Tutorial: https://www.youtube.com/watch?v=_Wj5pZnbVCY&feature=youtu.be

Cardiac cycle: https://www.youtube.com/watch?v=5cruHmQiTAA&feature=youtu.be

Sheep heart dissection

 The purpose of the pericardium is to protect the heart and to anchor the heart to its surrounding.
By comparing arteries and veins, arteries had a thicker wall than veins, and veins had valves to help the blood flow against gravity.
The function of the auricle is to expand the blood capacity of the atrium.
In our sheep heart, the ventricles and atria were collapsed, but we could see that the ventricles were smaller than the atria. The atria had thinner walls than the ventricles.

The anchoring of the heart valves by chordate tendinae and the papillary muscle is important in the heart's function because if there weren't chordate tendinae and papillary muscles, valves would  not shut. If the valves did not shut, the heart would not work properly.
The function of the semi-lunar valves is to prevent back-flow from ventricles to the aorta and pulmonary trunk.

If valve disease occurs on the right side of the heart, it results in swollen feet because blood is pooling in their feet because if the valve is not working, blood will not move forward and will be pulled down due to gravity. If valve disease occurred of the left side of the heart, the person might have decreased blood flow and a lack of oxygen

The right side of the heart is smaller than the left side of the heart, because the left side of the heart needs more muscle to be able to pump blood to the body.

 
  

Unit 3 Reflection

This unit was all about how the circulatory system works and the different parts of the circulatory system. There was also a section on the respiratory system. 
The cardiovascular system works by our heart pumping oxygen and nutrients and our body receiving that blood through blood vessels (veins and arteries). 

Cardiovascular health issues are heart attacks and cardiac arrests. They can be caused by atherosclerosis, a fatty buildup in our arteries. An ischemic stroke is caused by a blood clot in the brain and a hemorrhagic stroke is caused by an aneurysm in the brain (when a blood vessel in the brain bursts). 
To improve your cardiovascular health, you can exercise more, eat less food with high amounts of LDL and omega 6, and consume less alcohol. 

sheep heart from the dissection 

I wanted to learn more about blood cells, white blood cells especially, but I think that will be covered when we talk about the immune system. I am also confused about whether or not the human heart has auricles like the sheep heart did. 

In this unit, I studied a lot more for the tests and temp checks, so I learned more material than in pervious units. Another success of this unit was how well my group worked together; we really helped each other learn how the blood A weakness I had this unit was not staying on top of my journal work so i had to do a lot of table of contents work the night before, which could have been avoided. I had a lot of trouble understanding the treatments for strokes and cardiovascular disease section because it was a lot to memorize and I could not relate to it. 

The goal I made for my self for this unit was to start studying earlier and I did pay more attention to that and I did much better on my test for this unit. For the rest of the semester I want to focus on keeping up my study habits and organizing my notebook more.