Question

II. Fill in the blanks with the correct option.
1. Pericardial fluid is secreted by the
membrane. (pericardium/epicardium)
2. The red colour of blood is caused due to presence of (haemoglobin/haemocynin)
3. In double circulation, heart pumps blood to the lungs (oxygenated / deoxygenated)
4.
carry blood back to the heart. (Veins/Arteries)
5. The superior vena cava brings blood from the
(trunk and legs/head and arms)
6. Each semilunar valve has flaps. (two/three)​

Answer 1

Answer:

1.pericardium

2.hemoglobin

3.oxygenated

4.viens

5.Head and arms

6.two

Answer 2

1) Pericardium secretes Pericardial fluid.

2) Haemoglobin causes the red colour of blood, it is present in the erythrocytes.

3) Heart pumps deoxygenated blood to the lungs in double circulation.

4) Veins carry blood back to the heart ( Superior and Inferior Vena Cava)

5) The Superior Vena cava brings blood from the Upper Parts of the body ( Head and Arms).

6) Each semilunar valve has two flaps.