Sheep Heart Questions

1. The pericardium surround and protects the heart, holding it in its place
2. Arteries have thicker walls, but are smaller in size compared to veins
3. The auricle enables the atrium to hold larger amounts of blood.
4. The ventricles have thicker walls compared to the atria. 
5. (10a) the coronary sinus the wide venous channel on the posterior surface of the heart that collects blood from the coronary circulation and returns to the right atrium.
6. (10b)  it brings the oxygen deprived blood from the body
7. (10c) the tricuspid valve is located between the right atrium and ventricle and prevents backflow from the right atrium
8. (Q6) 
   
9. (Q8)
10. (Q9) The semilunar valves are located between the right ventricle and pulmonary artery and prevents blood from flowing from the artery back into the heart
11. (Q10a) The restricted blood flow causes pressure in the vessels that goes through the rest of the circulatory system; the pressure causes fluid to leak into surrounding tissues which can cause swelling in the legs and feet.
12. (Q10b) Valve disease on the left side of the heart can cause irregular heartbeat (arrhythmia), which can eventually lead to heart failure.
13. (Q11)
14. 
    (Q12) The right side of the heart deals with deoxygenated blood and pumps blood to the lungs; the left side of the heart deals with oxygenated blood and thicker walls since it has to pump oxygenated blood to the rest of the body.
15. (Q13)