Sheep Heart Dissection Reflection Questions

1. What is the purpose of the Pericardium
1. The purpose of the pericardium is the hearts protection. The pericardium is membrane that surrounds the heart and helps hold it into place if indeed if gets moved around.
2. How do arteries differ from veins in their structure 
1. The arteries will have a thicker wall than the veins. Unlike arteries, veins have valves that protect blood from back flowing. 
3. What function do you think the auricle serves?
1. The auricle is a structure that can resemble an ear or earlobe. The auricle is also another name for the term atrium. The function that the auricle serves is a small muscular appendage of each of the atriums. 
4. What differences do you observe between the external structures of the atria and ventricles? 
1.  The walls of the ventricles are thicker than the walls of the atria.
5. Use pictures or words to describe each:
1. exit from the coronary sinus: receives blood from the coronary vein which then empties the blood into the right atrium 
2. Exit from the inferior vena cava: a large vein that is responsible from carry deoxygenated blood into the heart
3. Right atrioventricular valve ( tricuspid valve): prevent any back flow of blood into the right atrium. 
6. Draw a picture of the tricuspid valve:
   
   
   
7. Why is "anchoring" of the heart valves by the chordate tendiane and the papillary muscle important to the heart function? Help prevent the tricuspid and biscuid valves from collapsing into the atrium. 
8. Using pictures or words describe what you see? The left atrioventricular valve also known as the biscupid valve look like a spider web, it was stringy like, that look almost like a trap. It was white and was like a tangled mess. 
9. What is the function of the semi-lunar valves?
1. The semi-lunar valve function is to act/prevent any back flow of blood from the arteries to the ventricles, it also is responsible form maintaning the pressure of any major arteries. 
10. a. If the valve disease occurs in the right side of the heart and cause swelling in the feet and ankles this might happen because the right side of the heart pumps deoxygenated blood so it deprives the lower body of that blood. b. if the valve disease occured on the left side of the heart some complactions you might expect to see are swelling in the hands because the left side deals with oxygenated blood. 
11. Using words and or pictures describe what you see? 
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12. Describe how the left and right sides of the heart differ from one another? 
1. The right side of the heart deals with de-oxygenated blood and pumps blood to the lung where it also picks up oxygen (absorbed) by the hemoglobin carrying red blood cells. While the left side of the heart deals with oxygenated blood, and pumps oxygenated blood to the rest of the body
13. Draw and label all structures visible in the interior of the cross sections. 

Sheep Heart Video

https://www.youtube.com/watch?v=MSn9fymN1SQ

Unit 3 was a complex unit on the circulatory system and respiratory system. Everything to do with the functioning of our heart, blood flow, and breathing. There is a lot of detail that you have to remember, especially naming the components of the heart. 

There is many causes of a heart attack and or stroke. The most common for a stroke is atherosclerosis, high blood pressure, lack of exercise, poor diet, and much more. In order to prevent a heart attack and/or stroke from occurring it important to live a healthy live style where you are exercising, eating healthy and much more. 

The cardiovascular system is the blood within the circulatory system, that delivers oxygen and nutrients to every single cell in the body. We learned about the function of the veins, arteries, capillaries and much more and how the arteries carry blood away from the heart and the veins carry blood back to the heart. 

We also learned about components of blood, and different types of white blood cells such as, monocytes, lymphocytes, neutrophils  and many more and how they are responsible for responding to certain things that happen within the body. 

Also with in this unit we learned about many conditions that people can have with cardiac and respiratory issues. some of these conditions are sickle cell anemia, pneumonia, asthma, "head cold", "chest cold" and so many more. We learned how they are caused, how they effect our body and how they can be treated. When we were learning about the cardiac system we learned what and EKG, MRI, EEG, CAT scan are and what they are used for. 

I really enjoyed unit 3. It was a complex unit with a lot of detail that you had to remember. I think the hardest thing for me was to learn the functioning of the heart. Some of the cycles were harder to remember. I enjoyed learning how to take blood pressure, and starting to do the sheep heart dissection. I am keeping track with all my goals but haven't thought of any new ones from the remainder of the year. I also enjoyed drawing a heart with the chalk it was a fun way to work with members of your group and also working together to remember the different parts of the heart.