PDF chapter test TRY NOW
1. Name two layered protective covering of human heart.
a. The heart consists of layers.
b. is the layer of the heart that contains outer double-walled sac.
c. The inner layer of the pericardium is called as .
2. What is the shape of RBC in human blood?
a. RBCs are formed in the .
b. The matured mammalian RBCs are
c. They are .
3. Why is the colour of the blood red?
a. RBCs contain the respiratory pigment , which imparts red colour to the blood.
b. Haemoglobin present in the RBCs transports from lungs to tissues.
Register for free to see more content