the mammalian heart

Question 1

Superior vena cava

Answer 1

Returns deoxygenated blood to the heart

Question 2

Right atrium

Answer 2

Contracts and pumps deoxygenated blood into the right ventricle

Question 3

Tricuspid valve

Answer 3

Pressure of the contraction of the atrium opens this valve which then closes, preventing backflow to the right atrium when the ventricles contract

Question 4

Right ventricle

Answer 4

Thinner muscular wall compared to the left ventricle as less pressure is produced on contraction

Question 5

Septum

Answer 5

Wall dividing oxygenated blood (left) and deoxygenated blood (right) side of heart

Question 6

Left ventricle

Answer 6

Comparatively thicker muscular wall to produce a higher pressure to push oxygenated blood rapidly around the body

Question 7

Bicuspid valve

Answer 7

Prevents backflow of blood into the left atrium when the ventricles contract

Question 8

Pulmonary veins

Answer 8

Return oxygenated blood from lungs to the left atrium

Question 9

Pulmonary (semilunar) valve

Answer 9

Similar one in aorta. They prevent blood flowing back into the ventricles between heart beats

Question 10

Pulmonary artery

Answer 10

Takes deoxygenated blood to lungs from right ventricle

Question 11

Aorta

Answer 11

Carries oxygenated blood from the left ventricle of the body