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.
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