Dissection Video

This is our sheep heart dissection video!
https://www.youtube.com/watch?v=gussycC6joU

Sheep Heart Dissection Questions

Q1. The purpose of the pericardium is to protect the heart. It also secretes a fluid to lubricate the heart and reduce friction.
Q2. The arteries and veins of the heart differ in a few ways. The vein is thinner than the artery and prevents back flow in the heart.
Q3. The auricle inflates as blood goes through and increases the volume of the atrium.
Q4. The ventricle and atria look very similar. A difference between the two is that the ventricle is thicker than the atria.
Q6.

Q7. Without the chordate tendinae and papillary muscle, the valves would not close and the blood would not flow properly.                                                                                                                                              

Q8. 

Q9. The function of the semi-lunar valve is to prevent back flow of blood from the arteries to the ventricles.  

Q10. a) Swelling in the feet and ankles due to a valve disease occurring on the right side is because the blood from the lower body would now properly flow through the heart. This cause the blood to stay in the lower body leading to swelling in the feet and ankles. 

b)If valve disease were to occur on the left side of the heart, the blood would not reach the lungs properly and breathing would be difficult due to the lack of oxygen.

Q11. 

Q12. The left and right side of the heart receives deoxygenated blood whereas the left side of the heart receives oxygen rich blood. The right side of the heart send the blood to the lungs and the left side sends the blood to the other parts of the body.

Q13. 

Unit 3 Reflection

Unit 3 was about the Cardiovascular System. The Circulatory System is a fluid filled network of tubes through which materials more between the environment and cells of multicellular animals. It transports the materials needed by cells and removes waste materials from cells.
Heart disease and strokes are caused by an unhealthy diet. This leads to fat being built up in the vessels. This could also lead to artherosclerosis.

To promote our health, we can do many things such as exercise, eat healthy, do not smoke and so much more!
I would love to learn more about what can happen to the heart if we don't treat it properly and to learn more about how to stay healthy and in good condition.

I think that one of my strengths throughout this unit was the location of the heart. I had trouble, though, learning about the different cells and disease but I will definitely find time to learn it own my own.

This unit, we dissected a sheep's heart. This was a really fun and interesting lab and I really look forward to more dissections in the future.
Below is a picture of the heart we dissected!